Tokyo University of Agriculture and Technology   Faculty of Engineering

- 1991

Analysis for the Potential of High-Efficiency and Low-Cost Vehicle-Integrated Photovoltaics Reviewed

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita, Taizo Masuda*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Tsutomu Tanimoto*, Yusuke Zushi*, Tatsuya Takamoto*, Kenji Araki*,Yasuyuki Ota*, Kensuke Nishioka**

Solar RRL   2200556   2022.9

Overview of Concentrator Solar cells and Analysis for their Non-radiative Recombination

Masafumi Yamaguchi, Kan-Hua Lee*, Daisuke Sato*, Kenji Araki*, Nobuaki Kojima, Yoshio Ohshita

ISES Solar World Congress 2021 Proceedings   92 - 100   2022.7

Loss Analysis of High-Efficiency Perovskite/Si Tandem Solar Cells for Large Market Applications Reviewed

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

Energy and Power Engineering   2022 ( 14 )   167 - 180   2022.4

Analysis for efficiency potential of II–VI compound, chalcopyrite, and kesterite‑based tandem solar cells Reviewed

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata*, Patrick Schygulla*, Frank Dimroth**, Nobuaki Kojima, Yoshio Ohshita

Journal of Materials Research   37   445 - 456   2022.1

Approaches for High-Efficiency III-V/Si Tandem Solar Cells Reviewed

Masafumi Yamaguchi, Kan-Hua Lee*, Patrick Schygulla*, Frank Dimroth*, Tatsuya Takamoto*, Ryo Ozaki*, Kyotaro Nakamura, Nobuaki Kojima,Yoshio Ohshita

Energy and Power Engineering   13   413 - 427   2021.12

Development of high-efficiency solar cell modules for PV-powered vehicles Reviewed

Masafumi Yamaguchi, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Christian Thiel*, Anastasios Tsakalidis*, Arnulf Jäger-Waldau*, Taizo Masuda*, Kenichi Okumura*, Takashi Nakado*, Kazumi Yamada*, Yusuke Zushi*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima,Yoshio Ohshita

Proceedings of the 38th European Photovoltaic Solar Energy Conference and Exhibition   1409 - 1411   2021.11

 Analysis of temperature coefficients and their effect on efficiency of solar cell modules for photovoltaics-powered vehicles Reviewed

Masafumi Yamaguchi, Taizo Masuda*, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Christian Thiel*, Anastasios Tsakalidis*, Arnulf Jaeger-Waldau*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Yusuke Zushi*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima, Yoshio Ohshita雄

Journal of Physics D: Applied Physics   54   504002   2021.9

Structural Characterization of GaAs Layer Grown on 2D-GaSe/Si(111) Substrate for Rapid Epitaxial Lift Off Reviewed

Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)   1941 - 1942   2021.8

Potential of Si Tandem Solar Cell Modules for PV-Powered Vehicles Reviewed

Masafumi Yamaguchi, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Taizo Masuda*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Yusuke Zushi*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima, Yoshio Ohshita

Proceedings of the 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)   120 - 122   2021.8

Development of High-Efficiency Solar Cell Modules for Photovoltaic-Powered Vehicles Reviewed

Masafumi Yamaguchi, Ryo Ozaki*, Kyotaro Nakamura, Kan-Hua Lee **, Nobuaki Kojima,Yoshio Ohshita, Taizo Masuda*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Yusuke Zushi*, Tsutomu Tanimoto*, Christian Thiel*, Anastasios Tsakalidis*, Arunulf Jäger-Waldau**

Solar RRL   2021   2100429   2021.8

Importance of Developing Photovoltaics-Powered Vehicles Reviewed

Masafumi Yamaguchi, Taizo Masuda*, Takashi Nakado*, Yusuke Zushi*, Kenji Araki*, Tatsuya Takamoto*, Kenichi Okumura*, Akinori Satou*, Kazumi Yamada*, Yasuyuki Ota*, Kensuke Nishioka*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima,Yoshio Ohshita

Energy and Power Engineering   13 ( 5 )   147 - 162   2021.5

Defect analysis of crystalline Si solar cells by learning radiation-induced defects in Si Reviewed

Masafumi Yamaguchi, Takefumi Kamioka **, Nobuaki Kojima, Yoshio Ohshita

MRS Communications   11 ( 3 )   272 - 277   2021.5

Low-temperature direct growth for low dislocation density in III-V on Si towards high-efficiency III-V/Si tandem solar cells Reviewed

Masafumi Yamaguchi, Yu-Cian Wang*, Nobuaki Kojima, Akio Yamamoto **,Yoshio Ohshita

Japanese Journal of Applied Physics   60 ( SB )   SBBF14   2021.2

Analysis for non-radiative recombination and resistance loss in chalcopyrite and kesterite solar cells Reviewed

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata*, Kan-Hua Lee**, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

Japanese Journal of Applied Physics   60   SBBF05   2021.1

Epitaxial GaAs Lift-off from Si(111) Wafer via 2D-GaSe Buffer Layer Reviewed

Nobuaki Kojima, Yu-Cian Wang **, Masafumi Yamaguchi, Yoshio Ohshita

Proceedings of the 37th European Photovoltaic Solar Energy Conference and Exhibition   615 - 617   2020.10

Analysis for nonradiative recombination loss and radiation degradation of Si space solar cells Reviewed

Masafumi Yamaguchi, Kan-Hua Lee **, Kenji Araki, Nobuaki Kojima, Yasuki Okuno **, Mitsuru Imaizumi **

Progress in Photovoltaics   29   98 - 108   2020.9

Development of high-efficiency and low-cost solar cells for PV-powered vehicles application Reviewed

Masafumi Yamaguchi, Taizo Masuda **, Kenji Araki, Daisuke Sato*, Kan-Hua Lee**, Nobuaki Kojima, Tatsuya Takamoto*, Kenichi Okumura*, Akinori Satou*, Kazumi Yamada*, Takashi Nakado*, Yusuke Zushi**, Yoshio Ohshita, Mitsuhiro Yamazaki **

Progress in Photovoltaics   29 ( 7 )   684 - 693   2020.9

Role of PV-Powered Vehicles in Low-Carbon Society and Some Approaches of High-Efficiency Solar Cell Modules for Cars Reviewed

Masafumi Yamaguchi, Taizo Masuda **, Kenji Araki, Daisuke Sato, Kan-Hua Lee*, Nobuaki Kojima, Tatsuya Takamoto*, Kenichi Okumura*, Akinori Satou*, Kazumi Yamada*, Takashi Nakado*, Yusuke Zushi*, Mitsuhiro Yamazaki*, Hiroyuki Yamada**

Energy and Power Engineering   12 ( 6 )   375 - 395   2020.6

Importance of Developing High-Efficiency Solar Cells for PV-Powered Vehicles Reviewed

Masafumi Yamaguchi, Kenji Araki **, Nobuaki Kojima, Tatsuta Takamoto*, Taizo Masuda*, Akinori Satou*, Kazumi Yamada*, Mitsuhiro Yamazaki**

Proceedings of the 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC)   221 - 223   2020.6

Overview and Loss Analysis of High-Efficincy III-V Compound Single-Junction Solar Cells Reviewed

Masafumi Yamaguchi, Kenji Araki **, Nobuaki Kojima, Yoshio Ohshita

Proceedings of the 2020 IEEE 47th Photovoltaic Specialists Conference (PVSC)   149 - 151   2020.6

Epitaxial GaAs Lift Off via III-VI Layered Compounds Reviewed

Nobuaki Kojima, ワン　ユ チェン, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)   1015 - 1017   2020.2

Proposals for Accelerating Photovoltaics Installations in Japan and Further Developments of Science and Technologies of Photovoltaics Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Satou**

Proceedings of the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)   1724 - 1728   2020.2

Analysis for Radiation Degradation of Advanced Si Space Solar Cells Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Yasuki Okuno*, Mitsuru Imaizumi**

Proceedings of the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)   2377 - 2380   2020.2

GaAs Grown on Si (111) by inserting metal selenides films Reviewed

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)   1068 - 1070   2020.2

Overview of Si Tandem Solar Cells and Approaches to PV-Powered Vehicle Applications Reviewed

Masafumi Yamaguchi, リ　カンファ, 佐藤　大輔, Kenji Araki, Nobuaki Kojima, Tatsuya Takamoto*, Taizo Masuda*, Akinori Satou**

MRS Advances   441 - 450   2020.1

online発行 Overview of Si Tandem Solar Cells and Approaches to PV-Powered Vehicle Applications Reviewed

Masafumi Yamaguchi, リ　カンファ, 佐藤　大輔, Kenji Araki, Nobuaki Kojima, Tatsuya Takamoto*, Taizo Masuda*, Akinori Satou**

MRS Advances   2020.1

Analysis of nonradiative recombination in quantum dot solar cells and materials Reviewed

Lin Zhu **, リ　カンファ, Masafumi Yamaguchi, Hidefumi Akiyama*, Yoshihiko Kanemitsu**, Kenji Araki, Nobuaki Kojima

Progress in Photovoltaics   27 ( 11 )   971 - 977   2019.11

Some Approaches of PV-Powered Vehicles Applications Reviewed

Masafumi Yamaguchi, Kenji Araki, 佐藤　大輔, リ　カンファ, Nobuaki Kojima, Kyotaro Nakamura, Yoshio Ohshita, Taizo Masuda*, Akinori Satou*, Kazumi Yamada*, Takashi Nakado*, Tatsuya Takamoto*, Takehiko Sato*, Mitsuhiro Yamazaki*, Mami Hasegawa*, Hiroyuki Yamada**

Proceedings of the 36th European Photovoltaic Solar Energy Conference and Exhibition   1787 - 1791   2019.10

How Does R&D on the Car-Roof PV Impact to the Entire PV Technologies? Reviewed

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

グランド再生可能エネルギー国際会議論文集   39   2019.3

Super-Multijunction Cell, A New Solar Cell Overcoming the Spectrum Loss of Multijunction Cells Reviewed

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

グランド再生可能エネルギー国際会議論文集   45   2019.3

Analysis of nonradiative recombination in quantum dot solar cells and materials Reviewed

Lin Zhu**, リ　カンファ, Masafumi Yamaguchi, Hidefumi Akiyama*, Yoshihiko Kanemitsu**, Kenji Araki, Nobuaki Kojima

Progress in Photovoltaics   2019   1 - 7   2019.1

Low-Temperature grown Gallium Arsenide on Silicon by using Migration-Enhanced Epitaxy Reviewed

ワン　ユ チェン, Akio Yamamoto*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC7)   264 - 267   2018.11 （   ISSN:0160-8371 ）

XRD Pole Figure Analysis of In2Se3Zinc-Blende Like (ZBL) Van der Waals Template for Epitaxial GaAs Lift Off Reviewed

Nobuaki Kojima, ワン　ユ チェン, Kei Kawakatsu*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC7)   214 - 215   2018.11 （   ISSN:0160-8371 ）

Analysis for Non-Radiative Recombination in Quantum Dot Solar Cells and Materials Reviewed

Lin Zhu**, リ　カンファ, Masafumi Yamaguchi, Hidefumi Akiyama*, Yoshihiko Kanemitsu**, Kenji Araki, Nobuaki Kojima

Proceedings of the 35th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2018)   6 - 11   2018.11

Super-Multijunction Cell, A New Solar Cell Overcoming the Spectrum Loss of Multijunction Cells Reviewed

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

Grand Renewable Energy 2018 Proceedings   O - Pv   2018.10

How Does R&D on the Car-Roof PV Impact to the Entire PV Technologies? Reviewed

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

Grand Renewable Energy 2018 Proceedings   O - Pv   2018.10

Analysis for efficiency potential of crystalline Si solar cells Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

Journal of Materials Research   33 ( 17 )   2621 - 2626   2018.9

Achieving Wide-Acceptance Angle and High On-Axis Performance Static Low-Concentration Module Using Hybrid Lens Arrays Reviewed

リ　カンファ, Kenji Araki, Nobuaki Kojima, Masafumi Yamaguchi

AIP Conference Proceedings   2012   040006   2018.9

Design Arithmetic of the Lateral III-V / Si Hybrid Module Reviewed

Kenji Araki, Kyotaro Nakamura*, ワン　ユ チェン, Nobuaki Kojima, Atsushi Ogura*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 44th IEEE Photovoltaic Specialists Conference (PVSC44)   2018.3

Enhancement of Si Photovoltaic Module by Introducing III-V/Si Hybrid Configurations and Cost Evaluations under Various Cost Ratios of III-V/Si Photovoltaics Reviewed

ワン　ユ チェン, Kenji Araki, Kyotaro Nakamura*, リ　カンファ, 神岡　武文, Nobuaki Kojima, Yoshio Ohshita

Proceedings of the 44th IEEE Photovoltaic Specialists Conference (PVSC44)   2018.3

Pypvcell: An Open-Source Solar Cell Modeling Library in Python Reviewed

リ　カンファ, Kenji Araki, オマル エルツチ, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings of the 44th IEEE Photovoltaic Specialists Conference (PVSC44)   2018.3

Analysis of future generation solar cells and materials Reviewed

Masafumi Yamaguchi, Lin Zhu*, Hidefumi Akiyama*, Yoshihiko Kanemitsu*, Hitoshi Tampo*, Hajime Shibata**, リ　カンファ, Kenji Araki, Nobuaki Kojima

Japanese Journal of Applied Physics   57 ( 4S )   04FS03   2018.2

Analysis for efficiency potential of high‐efficiency and next‐ generation solar cells Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Hiroyuki Yamada*, Yasuhiro Katsumata**

Progress in Photovoltaics: Research and Applications   543 - 552   2017.11

Novel Epitaxial GaAs Lift-Off Approach via van der Waals Interface in In2Se3 Buffer Layer Reviewed

Nobuaki Kojima, Li Wang*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 33rd European Photovoltaic Solar Energy Conference and Exhibition   1295 - 1297   2017.11 （ ISBN:3-936338-47-7 ）

Towards Creation of Mobility Society Using Solar Energy Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Satou*, Hiroyuki Yamada**

Proc. 2017 the 5th IEEE International Conference on Smart Energy Grid Engineering   394 - 399   2017.8 （ ISBN:978-1-5386-1774-8 ）

Effect of substrate orientation on strain relaxation mechanisms of InGaAs layer grown on vicinal GaAs substrates measured by in situ X-ray diffraction Reviewed

鈴木秀俊 **, Takuo Sasaki **, 高橋正光 **, Yoshio Ohshita, Nobuaki Kojima, 神谷　格, 福山敦彦 **, 碇哲雄 **, Masafumi Yamaguchi

Japanese Journal of Applied Physics   56   08MA06   2017.7

N-H related defect playing the role of acceptor in GaAsN grown by chemical beam epitaxy Reviewed

オマル エルツチ, Li Wang*, リ　カンファ, Kazuma Ikeda*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Crystal Growth   468   581 - 584   2017.6

Fabrication and performance analysis of a mechanical stack InGaP/GaAs//Si solar cell Reviewed

リ　カンファ, Kyotaro Nakamura*, 神岡　武文, Nobuaki Kojima, リ　ヒュンジュ, ワン　リー, Kenji Araki, Yoshio Ohshita, Atsuhi Ogura*, Masafumi Yamaguchi

Proceedings of the 43th IEEE Photovoltaic Specialists Conference (PVSC43)   1957 - 1959   2016.11 （ ISBN:978-1-5090-2724-8 ）

Assessing material qualities and efficiency limits of III-V on silicon solar cells using external radiative efficiency Reviewed

リ　カンファ, Kenji Araki, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 43th IEEE Photovoltaic Specialists Conference (PVSC43)   1906 - 1908   2016.11 （ ISBN:978-1-5090-2724-8 ）

Assessing material qualities and efficiency limits of III–V on silicon solar cells using external radiative efficiency Reviewed

リ　カンファ, Kenji Araki, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Progress in Photovoltaics: Research and Applications   24   1310 - 1318   2016.6

Assessing Material Qualities and Efficiency Limits of III-V on Silicon Solar Cells Using External Radiative Efficiency Reviewed

リ　カンファ, Kenji Araki*, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Submitted for journal review. Preprint: arXiv.org   arXiv:1512.02056   2016.3

Inhomogeneous nitrogen incorporation effects on the transport properties of GaAsN grown by CBE Reviewed

ワン　リー, Omar Elleuch semiconductor*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Crystal Growth   437   6 - 9   2016.1

Potential and Activities of III-V/Si Tandem Solar Cells Reviewed

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

ECS Journal of Solid State Science and Technology   5 ( 2 )   Q68 - Q73   2015.12

NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems (A Final Review) Reviewed

A. Datas, A.B. Cristóbal, G. Sala, I. Antón, J.C. Miñano, P. Benitez, C. Algora, A.W. Bett, D. Lackner, M. Niemeyer, S.P. Philipps, G. Siefer, N. J. Ekins-Daukes, F. Roca, C. Cancro, I.Luque-Heredia, W. Warmuth, M. Baudrit, Y. Okada, M. Sugiyama, Y. Hishikawa, T. Takamoto*, Kenji Araki, A. Fukuyama, K. Nishioka, H. Suzuki, N. Kuze, Y. Moriyasu, T. Kita, A. Kotagiri*, Nobuaki Kojima, A. Martí*, Masafumi Yamaguchi, A. Luque*

Proc. 31st European Photovoltaic Solar Energy Conference and Exhibition   1384 - 1391   2015.11

Prospect of InGaAsN Solar Cells Grown by Chemical Beam Epitaxy for High-Efficiency Multi-Junction Solar Cells Reviewed

リ　カンファ, Omar Elleuch*, Kazuma Ikeda*, ワン　リー, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 42th IEEE Photovoltaic Specialists Conference (PVSC42)   2015.10

Effects of Arsenic Source Molecule on N-H related Defects Formation in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Yoshio Ohshita, Koshiro Demizu*, Omar Elleuch*, Kazuma Ikeda*, Nobuaki Kojima, Hideaki Machida, Hiroshi Sudoh*, Masafumi Yamaguchi

Proc. 42th IEEE Photovoltaic Specialists Conference (PVSC42)   2015.10

Structure of the Acceptor Defects in P-type GaAsN Grown by Chemical Beam Epitaxy Reviewed

Omar Elleuch*, ワン　リー, リ　カンファ, Koshiro Demizu*, Kazuma Ikeda*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 42th IEEE Photovoltaic Specialists Conference (PVSC42)   2015.10

Suppression of Twin Formation in Layered In₂Se₃ Grown on GaAs(111) Reviewed

Nobuaki Kojima, Hiroya Nakamura*, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 42th IEEE Photovoltaic Specialists Conference (PVSC42)   2015.10

Double acceptor in p-type GaAsN grown by chemical beam epitaxy Reviewed

Omar Elleuch*, ワン　リー, リ　カンファ, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Crystal Growth   432   45 - 48   2015.9

Identification of N‒H related acceptor defects in GaAsN grown by chemical beam epitaxy using hydrogen isotopes Reviewed

Omar Elleuchi*, ワン　リー, リ　カンファ, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Alloys and Compounds   649   815 - 818   2015.7

Effects of source gas molecules on N–H- and N–D-related defect formations in GaAsN grown by chemical beam epitaxy Reviewed

池田　和磨, Yoshio Ohshita, Tomohiro Tanaka*, Takahiko Honda*, Makoto Inagaki*, Koshiro Demizu*, Nobuaki Kojima, Hidetoshi Suzuki*, Hideaki Machida,Hiroshi Sudoh*, Masafumi Yamaguchi

Japanese Journal of Applied Physics   54 ( 4 )   041001   2015.3

Hole traps associated with high-concentration residual carriers in p-type GaAsN grown by chemical beam epitaxy Reviewed

Omar Elleuch*, ワン　リー, リ　カンファ, Koshiro Demizu*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Applied Physics   117   045712   2015.1

Overview of Loss Mechansims for Super High-Efficiency Multijunction Solar Cells Reviewed

Masafumi Yamaguchi, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Tatsuya Takamoto*

Proc. 29th European Photovoltaic Solar Energy Conference and Exhibition   2050 - 2053   2014.11

Growth of (In_XGa_1-X)₂Se₃ Buffer Material for Spalling a III-V Overlayer via Van Der Waals Interface Reviewed

Nobuaki Kojima, Hiroya Nakamura*,Yoshio Ohshita, Masafumi Yamaguchi

Proc. 29th European Photovoltaic Solar Energy Conference and Exhibition   2063 - 2065   2014.11

Analysis of the main acceptor defect in p-type GaAsN grown by chemical beam epitaxy Reviewed

Omar Elleuch*, Boussairi Bouzazi*, Hiroyuki Kowaki*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   53 ( 9 )   091201   2014.8

Correlations between N–H local vibrational modes in GaAsN grown by chemical beam epitaxy Reviewed

池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   53 ( 7 )   071001   2014.6 （   ISSN:1347-4065 ）

Wagging and stretching modes of N–H complexes in GaAsN grown by chemical beam epitaxy Reviewed

Koshiro Demizu*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   53   05FV02   2014.4 （   ISSN:1347-4065 ）

Nickel distribution and recombination activity in as-grown and annealed multicrystalline silicon Reviewed

Takuto Kojima*, 立花　福久, Nobuaki Kojima, Yoshio Ohshita, Koji Arafune*, Atsushi Ogura*, Masafumi Yamaguchi

Japanese Journal of Applied Physics   53 ( 4S )   04ER20   2014.3 （   ISSN:1347-4065 ）

Effect of surface morphology on the density of energy states in GaAsN grown by chemical beam epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   53 ( 4 )   04ER08   2014.2

NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems Reviewed

A.Datas , A.B. Cristóbal , G. Sala , I. Antón, J.C. Miñano, P. Benitez*, A.W. Bett, G.Siefer, N. J. Ekins-Daukes*, F.Roca, C. Cancro, I.Luque-Heredia, W. Warmuth, M. Baudrit*, Y. Okada, M. Sugiyama, Y. Hishikawa*, T.Takamoto, K. Araki, A. Fukuyama, K. Nishioka, H. Suzuki*, N. Kuze, Y. Moriyasu, T. Kita, A. Kotagiri*, Nobuaki Kojima, A.Martí*, Masafumi Yamaguchi, A. Luque*

Proc. 28th European Photovoltaic Solar Energy Conference and Exhibition   88 - 93   2013.12

Preferential N-H bond direction in GaAsN grown by chemical beam epitaxy Reviewed

池田　和磨, Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

physica status solidi   10 ( 11 )   1513 - 1516   2013.10

Effect of arsenic source flow rate on the lattice defects in GaAsN grown by chemical beam epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

physica status solidi   10 ( 11 )   1477 - 1480   2013.9 （   ISSN:1862-6270 ）

Analysis of defects in GaAsN grown by chemical beam epitaxy on high index GaAs substrates Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

AIP Conference Proceedings   1556   30 - 33   2013.9 （ ISBN:978-0-7354-1182-1 ）

Optical DLTS for the study of recombination centers in GaAsN grown by chemical beam epitaxy Reviewed

Hiroyuki Kowaki*, Kan-Hua Lee*, Takuto Kojima*, Makoto Inagaki*, 池田　和磨, ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, N.J. Ekins-Daukes*

AIP Conference Proceedings   1556   41 - 44   2013.9 （ ISBN:978-0-7354-1182-1 ）

Real-time observation of crystallographic tilting InGaAs layers on GaAs offcut Substrates Reviewed

Toshiaki Nishi*, Takuo Sasaki*, 池田　和磨, Hidetoshi Suzuki*, Masamitu Takahasi*, Kenichi Shimomura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

AIP Conference Proceedings   1556   14 - 17   2013.9 （ ISBN:978-0-7354-1182-1 ）

Ga₂Se₃ and (InGa)₂Se₃ as novel buffer layers in the GaAs on Si system Reviewed

Nobuaki Kojima, Crisóforo Morales*, Yoshio Ohshita, Masafumi Yamaguchi

AIP Conference Proceedings   1556   38 - 40   2013.9

Effect of electron and proton irradiation on recombination centers in GaAsN grown by chemical beam epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Current Applied Physics   13 ( 7 )   1269 - 1274   2013.9

III-V-N Materials for Super High Efficiency Multi-junction Solar Cells Reviewed

池田　和磨, Masafumi Yamaguchi, ブザイリ ブザジ, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita

Japanese Journal of Applied Physics   52 ( 8 )   08JH11   2013.7

Analysis of Current Transport Mechanisms in GaAsN Homojunction Solar Cell Grown by Chemical Beam Epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

IEEE JOURNAL OF PHOTOVOLTAICS   3 ( 2 )   909 - 915   2013.4 （   ISSN:2156-3381 ）

Capacitance-voltage and current-voltage characteristics for the study of high background doping and conduction mechanisms in GaAsN grown by chemical beam epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Alloys and Compounds   552   469 - 474   2013.3 （   ISSN:0925-8388 ）

Improving Crystallinity of Thin Si Film for Low-Energy-Loss Micro-/Nano-Electromechanical Systems Devices by Metal-Induced Lateral Crystallization Using Biomineralized Ni Nanoparticles Reviewed

Shinya Kumagai , Hiromu Murase*, Syusuke Miyachi*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, Ichiro Yamashita*, Yukiharu Uraoka*, Minoru Sasaki

Japanese Journal of Applied Physics   51 ( 11 )   11PA03   2012.11 （   ISSN:1347-4065 ）

NITROGEN-RELATED DEFECTS AND THEIR EFFECT ON THE ELECTRICAL PROPERTIES OF GaAsN GROWN BY CHEMICAL BEAM EPITAXY Reviewed

ブザイリ ブザジ, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 37th IEEE Photovoltaic Specialists Conference (PVSC37)   454 - 458   2012.10

LOWERING SYMMETRY AROUND N-CLUSTER BY BREAKING Ga-N BOND IN GaAsN Reviewed

池田　和磨, Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 37th IEEE Photovoltaic Specialists Conference (PVSC37)   489 - 492   2012.10 （ ISBN:978-1-4244-9964-9   ISSN: 0160-8371 ）

EFFECT OF N-INDUCED SCATTERING CENTERS ON ELECTRON MOBILITY IN CBE GROWN GaAsN FILMS Reviewed

Makoto Inagaki*, Shunsuke Kimura*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 37th IEEE Photovoltaic Specialists Conference (PVSC37)   493 - 495   2012.10 （ ISBN:978-1-4244-9964-9   ISSN: 0160-8371 ）

IDENTIFICATION OF HYDROGEN INCORPORATION INTO GaAsN BY GROWTH WITH DEUTERATED PRECURSORS Reviewed

Suguru Wada*, Tomohiro Tanaka*, Makoto Inagaki*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 37th IEEE Photovoltaic Specialists Conference (PVSC37)   560 - 563   2012.10 （ ISBN:978-1-4244-9964-9   ISSN: 0160-8371 ）

POLYMER FORMATION IN CONDUCTIVE Mg-DOPED C₆₀ FILMS Reviewed

Nobuaki Kojima, Seiji Nishi*, クリソフォロ　モラーレス, Masafumi Yamaguchi

Proc. 37th IEEE Photovoltaic Specialists Conference (PVSC37)   723 - 725   2012.10 （ ISBN:978-1-4244-9964-9   ISSN: 0160-8371 ）

Structural and Molecular Changes of C₆₀ Thin Films with Incorporated Magnesium Atoms Reviewed

クリソフォロ　モラーレス, Nobuaki Kojima, Seiji Nishi*, Masafumi Yamaguchi

Japanese Journal of Applied Physics   51 ( 4 )   04DK08   2012.4

Effect of Thermal Stress on a N-Related Recombination Center in GaAsN Grown by Chemical Beam Epitaxy Reviewed

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   51 ( 2 )   02BP02   2012.2

Growth orientation dependent photoluminescence of GaAsN alloys Reviewed

ハン　シュウシュン, Tomohiro Tanaka*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, Shinichiro Sato*

Applied Physics Letters   100 ( 3 )   032108   2012.1

DEFECT ANALYSIS OF III-V-N MATERIALS FOR SUPER HIGH-EFFICIENCY MULTIJUNCTION SOLAR CELLS Reviewed

Masafumi Yamaguchi, ブザイリ ブザジ, Hidetoshi Suzuki*, Yoshio Ohshita, Nobuaki Kojima, Tatsuya Takamoto*

Proceedings of the 26th European Photovoltaic Solar Energy Conference and Exhibition   54 - 57   2011.10 （ ISBN:3-936338-27-2 ）

PHOTOLUMINESCENCE STUDY OF ELECTRON-IRRADIATED GaAsN LAYERS ON (311)A/B GaAs SUBSTRATES Reviewed

ハン　シュウシュン, Tomohiro Tanaka*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, Shinichiro Sato*

Proceedings of the 26th European Photovoltaic Solar Energy Conference and Exhibition   93 - 96   2011.10 （ ISBN:3-936338-27-2 ）

EFFECTS OF Ni AND Cu ON RECOMBINATION ACTIVITY OF (110)/ (100) DSB INTERFACE Reviewed

Takuto Kojima*, Mari Aoki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 26th European Photovoltaic Solar Energy Conference and Exhibition   1489 - 1491   2011.10 （ ISBN:3-936338-27-2 ）

Effect of Low Growth Rate in Chemical Beam Epitaxy on Carrier Mobility and Lifetime of p-GaAsN Films Reviewed

Takahiko Honda*, 池田　和磨, Makoto Inagaki*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   50 ( 8 )   08KD06   2011.8 （   ISSN:1347-4065 ）

Origin Investigation of a Nitrogen-Related Recombination Center in GaAsN Grown by Chemical Beam Epitaxy Reviewed

ブザイリ ブザジ, Jong-Han Lee*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   50 ( 1 )   051001   2011.5

Shallow Carrier Trap Levels in GaAsN Investigated by Photoluminescence Reviewed

Makoto Inagaki*, Hidetoshi Suzuki*, Kazumasa Mutaguchi*, Atsuhiko Fukuyama*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   50 ( 4 )   04DP14   2011.4 （   ISSN:1347-4065 ）

Novel material for super high efficiency multi-junction solar cells Reviewed

Yoshio Ohshita, Hidetoshi Suzuki*, Nobuaki Kojima, Tomohiro Tanaka*, Takahiko Honda*, Makoto Inagaki*, Masafumi Yamaguchi

Journal of Crystal Growth   318 ( 1 )   328 - 331   2011.3

Relationship between a nitrogen-related hole trap and ionized acceptors density in p-type GaAsN grown by chemical beam epitaxy Reviewed

Boussairi Bouzazi*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Physica Status Solidi C   8 ( 2 )   616 - 618   2011.2 （   ISSN:1610-1642 ）

N incorporation and optical properties of GaAsN epilayers on (311)A/B GaAs substrates Reviewed

ハン　シュウシュン, Hidetoshi Suzuki*, ジョンハン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Journal of Physics D: Applied Physics   44 ( 1 )   015402   2011.1 （   ISSN:0022-3727 ）

A recombination center in p-type GaAsN grown by chemical beam epitaxy Reviewed

Boussairi Bouzazi*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Solar Energy Materials & Solar Cells   95 ( 1 )   281 - 283   2011.1

Enhanced N Incorporation and Improved Optical Properties in GaAsN Epilayers by using High-Index GaAs Substrates Reviewed

ハン　シュウシュン, Hidetoshi Suzuki*, ジョンハン　リー, Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002050 - 002052   2010.12 （ ISBN:978-1-4244-5891-2 ）

Recent R&D Topics on Concentrator Mutli-junction Solar Cells and Materials Under Innovative Solar Cells’ R&D Project Reviewed

Masafumi Yamaguchi, Hidetoshi Suzuki*, Yoshio Ohshita, Nobuaki Kojima, Tatsuya Takamoto*

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   001237 - 001242   2010.12

Electrical Conduction Properties of Mg-doped C₆₀ Films Reviewed

Nobuaki Kojima, Masato Natori*, クリソフォロ　モラーレス, Seiji Nishi*, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   001650 - 001652   2010.12

Growth Temperature Dependence of Structure in Mg-doped C₆₀ Films Reviewed

Seiji Nishi*, Masato Natori*, Nobuaki Kojima, クリソフォロ　モラーレス, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   001653 - 001656   2010.12

Properties of a Nitrogen-Related Hole Trap Acceptor-Like State in p-Type GaAsN Grown by Chemical Beam Epitaxy Reviewed

Boussairi Bouzazi*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   49 ( 12 )   121001   2010.12

Improvement of Minority Carrier Lifetime in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Takahiko Honda*, Makoto Inagaki*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002053 - 002056   2010.12

Origin of Near-Band-Edge Luminescence of GaAsN Reviewed

Makoto Inagaki*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002062 - 002065   2010.12

Low Temperature Growth GaAs on Ge by Chemical Beam Epitaxy Reviewed

ジョンハン　リー, Hidetoshi Suzuki*, ハン　シュウシュン, Makoto Inagaki*, 池田　和磨, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002070 - 002073   2010.12

Study of GaAsN Thin Film Structures by X-ray Reciprocal Space Mapping for Multi-Junction Solar Cell Application Reviewed

Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002117 - 002119   2010.12

Identification of N-H Related Defects in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Tomohiro Tanaka*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 35th IEEE Photovoltaic Specialists Conference (PVSC35)   002120 - 002124   2010.12

Removal of a Possible Split Interstitial (N-As)As Recombination Center in GaAsN Grown by Chemical Beam Epitaxy Using Proton Implantation Reviewed

Boussairi Bouzazi*, ジョンハン　リー, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion   69 - 72   2010.12

Recent R&D Topics on Concentrator Multi-Junction Solar Cells and Materials under Japanese Innovative Photovoltaic R&D Program since FY2008 Reviewed

Masafumi Yamaguchi, Hidetoshi Suzuki*, Yoshio Ohshita, Nobuaki Kojima, Takamoto Tatsuya*

Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion   163 - 166   2010.12

Effect of Doping with Magnesium on Structural, Optical and Electrical Properties of Epitaxial-Grown Mg-Doped C60 Thin Films Reviewed

クリソフォロ　モラーレス, Nobuaki Kojima, Masato Natori*, Naoki Ogata*, Seiji Nishi*, Masafumi Yamaguchi

Proceedings of the 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion   781 - 783   2010.12

Improvement of Minority-Carrier Lifetime in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Takahiko Honda*, Makoto Inagaki*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of International Symposium on Dry Process(DPS2010)   37 - 38   2010.11

Structural Analysis of GaAsN Thin Films Grown By Chemical Beam Epitaxy Using X-Ray Reciprocal Space Map Reviewed

Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of International Symposium on Dry Process（DPS2010)   39 - 40   2010.11

Electrical and Structural Characterization of Epitaxial-Grown Mg-Doped C₆₀ Thin Films Reviewed

Nobuaki Kojima, Masato Natori*, Masafumi Yamaguchi

ECS Transactions   25 ( 22 )   7 - 11   2010.6 （   ISSN:1938-5862 ）

Relation between N–H complexes and electrical properties of GaAsN determined by H implantation Reviewed

Jong-Han Lee*, Hidetoshi Suzuki*, Xiuxun Han*, Takahiko Honda*, Tomohiro Tanaka*, Jong-Ha Hwang*, Boussairi Bouzazi、Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Current Applied Physics   10 ( 3 )   S431 - S434   2010.5

Relation between N-H complexes and electrical properties of GaAsN determined by H implantation Reviewed

ジョンハン　リー, Hidetoshi Suzuki*, ハン　シュウシュン, Takahiko Honda*, Tomohiro Tanaka*, Jong-Ha Hwang*, Boussairi Bouzazi、Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Current Applied Physics   10 ( 3 )   431 - 434   2010.5 （   ISSN:1567-1739 ）

Relation between N–H complexes and electrical properties of GaAsN determined by H implantation Reviewed

Jong-Han Lee Korea University*, Hidetoshi Suzuki 宮崎大学*, ハン　シュウシュン, Katahiko Honda 修士2*, Tomohiro Tanaka 修士2*, Jong-Ha Hwang*, Boussairi Bouzazi 博士3*, Makoto Inagaki 博士1*, Nobuaki Kojima, Yoshio Ohshita、 Masafumi Yamaguchi*

Current Applied Physics   10 ( 3 )   S431 - S434   2010.5

Nitrogen-Related Recombination Center in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Boussairi Bouzazi*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Japanese Journal of Applied Physics   49 ( 5 )   051001   2010.5

Improvements in Optoelectrical Properties of GaAsN by Controlling Step Density during Chemical Beam Epitaxy Growth Reviewed

Hidetoshi Suzuki*, Makoto Inagaki*, Takahiko Honda*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Japanese Journal of Applied Physics   49 ( 4 )   04DP08   2010.4

Nitrogen Related Electron Trap with High Capture Cross Section in n-Type GaAsNGrown by Chemical Beam Epitaxy Reviewed

Boussairi Bouzazi*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Applied Physics Express   3 ( 5 )   051002   2010.4

Properties of Chemical Beam Epitaxy grown GaAs0.995N0.005 homo-junction solar cell Reviewed

Boussairi Bouzazi 博士2*, Kenichi Nishimura 2007 博士満了*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Current Applied Physics.   10   S188 - S190   2010

Flow modulation effect on N incorporation into GaAs(1−x)Nx films during chemical beam epitaxy growth Reviewed

H. Suzuki*, K.Nishimura 2007博士満了*, K.Saito 2008修士修了*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Journal of Crystal Growth   311 ( 10 )   2821 - 2824   2009.5

Crystal Structures of Copper–Phthalocyanine on C₆₀(111) Surface Grown by Molecular Beam Epitaxy Reviewed

Hidetoshi Suzuki*, Yusuke Yamashita 2004修士修了*, Nobuaki Kojima, Masafumi Yamaguchi

Japanese Journal of Applied Physics   48 ( 8 )   6879 - 6882   2009

Effects of Residual Carbon and Hydrogen Atoms on Electrical Property of GaAsN Films Grown by Chemical Beam Epitaxy Reviewed

Hidetoshi Suzuki*, Kenichi Nishimura 2008博士満了*, Kenji Saito 修士2*, Taiki Hashiguchi 修士2*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Japanese Journal of Applied Physics   47 ( 8 )   6910 - 6913   2009

ＣＯＮＤＵＣＴＩＶＩＴＹ　ＩＭＰＲＯＶＥＭＥＮＴ　ＯＦ　ＥＰＩＴＡＸＩＡＬ-ＧＲＯＷＮ　Ｍｇ-ＤＯＰＥＤ　Ｃ60　ＴＨＩＮ　ＦＩＬＭＳ Reviewed

Nobuaki Kojima, Ｍaｓａｔｏ Ｎａｔｏｒｉ 修士 2*, Hidetoshi Suzuki*, Masafumi Yamaguchi

Proceedings34th IEEE Photovoltaic Specialists Confernece   000725 - 000728   2009

Structural characterization of Mg-doped C₆₀ thin films Reviewed

Nobuaki Kojima, M. Natori 修士2*, H. Suzuki*, Masafumi Yamaguchi

Journal of Physics: Conference Series   159   12018   2009

Studies on Concentrator Multi-Junction Solar Cells and Materials in the Japanese Innovative PV R&D Program Reviewed

Masafumi Yamaguchi, Yoshio Ohshita, Nobuaki Kojima, Hidetoshi Suzuki*, Boussairi Bouzazi 博士2*, Tatsuya Takamoto 1998博士修了シャープ*, Yoshita Okada 東京大学*

Proceedings 24th European Photovoltaic Solar Energy Conference,   218 - 221   2009

A High Capture Cross Section's Recombination Center in p-Type GaAsN Grown by Chemical Beam Epitaxy Reviewed

Boussairi Bouzazi 博士2*, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 24th European Photovoltaic Solar Energy Conference   68 - 71   2009

Novel materials for high-efficiency solar cells Reviewed

Nobuaki Kojima, Masato Natori 修士2*, Hidetoshi Suzuki*, Makoto Inagaki 修士2*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings Photonics and Optoelectronics Meetings (POEM)   7518   75180P - 1   2009

HOLE MOBILITY OF GaAs1-XNX GROWN BY CHEMICAL BEAM EPITAXY Reviewed

Hidetoshi Suzuki*, Taiki Hashiguchi 2008　修士修了*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings34th IEEE Photovoltaic Specialists Confernece   000848 - 000851   2009

ANALYSIS　OF DEFECTS　AND IMPURITIES　IN　NEW　（In）GaAsN　MATERIALS　FOR　CONCENTRATOR　MULTI-JUNCTION　SOLAR　CELLS Reviewed

Masafumi Yamaguchi, Yoshio Ohshita, Nobuaki Kojima, Hidetoshi Suzuki and Boussairi Bouzazi 博士2*

Proceedings34th IEEE Photovoltaic Specialists Confernece   002332 - 002335   2009

Novel materrials for high-efficiency solar cells Reviewed

Nobuaki Kojima, Ｍａｓａｔｏ　Ｎａｔｏｒｉ 修士２*, Hidetoshi Suzuki*, Makoto Inagaki 修士1*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings of SPIE   7518   75180P - 1   2009

Studies on Concentrator Multi-Junction Solar Cells and Materials in the Japanese Innovative PV R&D Program Reviewed

Masafumi Yamaguchi, Yoshio Ohshita, Nobuaki Kojima, Hidetoshi Suzuki*, Boussairi Bouzazi 博士2*, Tatsuya Takamoto 1998 博士修了*, Yoshita Okada 東京大学*

Proceedings24th European Photovoltaic Solar Energy Conference   218 - 221   2009

Fabrication of GaAsN Homo-Junction Solar Cells by Chemical Beam Epitaxy Reviewed

H. Suzuki*, K. Nishimura*, T. Hashiguchi*, K. Saito*, B. Balasubramanian*, S. Yamamoto*, M. Inagaki,*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings 33rd IEEE Photovoltaic Specialist Conference   ( 51 )   2008

Electrical Properties of Mg Doped C60 Thin Films Reviewed

Nobuaki Kojima, M. Natori 修士1*, H. Suzuki*, Masafumi Yamaguchi

Proceedings 33rd IEEE Photovoltaic Specialist Conference   ( 271 )   2008

Novel materials for high-efficiency III–V multi-junction solar cells Reviewed

Masafumi Yamaguchi, Ken-Ichi Nishimura 博士３*, Takuo Sasaki 博士２*, Hidetoshi Suzuki*, Koji Arafune*, Nobuaki Kojima, Yoshio Ohshita, Yoshitaka Okada University of Tsukuba*, Akio Yamamoto Fukui University*, Tatsuya Takamoto(Sharp Co.)、Kenji Araki(Daido Steel Corporation)*

Solar Energy   82 ( 2 )   173 - 180   2008

Carbon Reduction in GaAsN Thin Films by Flow-Rate-Modulated Chemical Beam Epitaxy Reviewed

Kenichi NISHIMURA 博士3*, Hidetoshi Suzuki*, Kenji SAITO 修士2*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Japanese Journal of Applied Physics   47 ( 4 )   2072 - 2075   2008

Electrical Property and Cell Fabrication of GaAsN Thin Films Grown by Chemical Beam Epitaxy Reviewed

Nobuaki Kojima, H. Suzuki*, K. Nishimura 2007博士満了*, T. Hashiguchi 修士2*, K. Saito 2008修士修了*, B. Balasubramanian*, S. Yamamoto 2007学部卒業*, M. Inagaki 修士1*, Masafumi Yamaguchi

Proceedings 23rd European Photovoltaic Solar Energy Conference   944 - 946   2008

Super High Efficiency Multi-Junction and Concentrator Solar Cells Reviewed

Masafumi Yamaguchi, Nobuaki Kojima, Yoshio Ohshita, T. Takamoto 1998博士修了*, K. Araki 大同特殊鋼*

Proceedings Renewable Energy 2008   IN - PV   2008

Chemical Beam Epitaxy Grown GaAs0.995N0.005 Based Homojunction Solar Cell Properties Reviewed

B. Bouzazi 博士1*, K. Nishimura 2007博士満了*, H. Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings Renewable Energy 2008   O - PV   2008

Effects of N-H Related Complexes on Electrical Property of GaAsN Films Grown by Chemical Beam Epitaxy Reviewed

H. Suzuki*, K. Nishimura 2007博士満了*, B. Bouzazi 博士1*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings Renewable Energy 2008   P - PV   2008

Effects of N Related Complex Defects on Electrical Property of GaAsN Films Grown by Chemical Beam Epitaxy Reviewed

H. Suzuki*, K. Nishimura 2007博士満了*, B. Boussairi 博士1*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 23rd European Photovoltaic Solar Energy Conference   438 - 440   2008

Effect of Surface Steps on N Incorporation Processes of GaAsN Growth in Chemical Beam Epitaxy Reviewed

T. Hashiguchi 修士2*, K. Nishimura 2007博士満了*, H. Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings Renewable Energy 2008   P - PV   2008

Electrical Properties of GaAsN Film Grown by Chemical Beam Epitaxy Reviewed

K. Nishimura 博士3*, H. Suzuki*, K. Saito 修士2*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Physica B   401-402   343 - 346   2007

Carbon incorporation process in GaAsN films grown by chemical beam epitaxy using MMHy or DMHy as the N source Reviewed

H. Suzuki*, K. Nishimura 博士2*, H.S.Lee LG Electronics Institute of Technology*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Thin Solid Films   515   5008 - 5011   2007

The Study on Electrical Property of GaAsN Thin Films Grown by Chemical Beam Epitaxy Reviewed

K. Nishimura 博士3*, Nobuaki Kojima, T. Imai 2006修士修了*, H. Suzuki*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 22nd European Photovoltaic Solar Energy Conference　   684 - 686   2007

Crystal Structures of Copper Phthalocyanine on C60(111) Surface Growth by Molecular Beam Epitaxy Reviewed

H. Suzuki*, Y. Yamashita 2006修士修了*, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings 2007 International Symposium on Dry Process   43 - 44   2007

Novel Materials and Structures for Super High Efficiency Multi-junction Solar Cells Reviewed

Masafumi Yamaguchi, H. Suzuki*, K. Nishimura 博士3*, Nobuaki Kojima, Yoshio Ohshita, Y. Okada 筑波大学*

Proceedings ISES Solar World Congress 2007   1028 - 1032   2007

Mg Doping in C60 Layer for C60/a-C Superlattice Solar Cells Reviewed

Nobuaki Kojima, T. Terayama*, K. Honda*, H. Suzuki*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion   53 - 55   2006

Hydrogen Treatment Effects of a-C Films for C60/a-C Superlattice Solar Cells Reviewed

K. Honda*, Nobuaki Kojima, T. Imaizumi*, T. Terayama*, H. Suzuki*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion   142 - 145   2006

Carbon-based Superlattice Solar Cells Reviewed

Nobuaki Kojima, T. Terayama*, K. Honda*, H. Suzuki*, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings Renewable Energy 2006   373 - 375   2006

Molecular Orientation of Copper Phthalocyanine on C60 (111) Surface Reviewed

H. Suzuki*, Y. Yamashita*, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings Renewable Energy 2006   380 - 383   2006

Effects of thermal cycle annealing on reduction of defect density in lattice-mismatched InGaAs solar cells Reviewed

佐々　木拓生, K. Arafune*, H. S. Lee LG Elect. Inst. Tech.*, N.J. Ekins-Daukes Univ. Sydney*, S. Tanaka Nagoya Univ.*, Nobuaki Kojima, Yoshio Ohshita

Physica B   376-377   626 - 629   2006

Optical Properties of C60/a-C Superlattice Structures for Solar Cell Applications Reviewed

Nobuaki Kojima, Y. Sugiura アイシン精機・2003卒業*, Masafumi Yamaguchi

Solar Energy Materials and Solar Cells   90 ( 18-19 )   3394 - 3398   2006

Interface Structure Analysis Between C60 and CuPc for Organic Solar Cells Reviewed

Y. Yamashita*, H. Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion   263 - 266   2006

Nitrogen Incorporation in GaAsN Grown by Chemical Beam Epitaxy Reviewed

Yoshio Ohshita, K. Nishimura*, H. S. Lee*, Nobuaki Kojima, I. Gono*, H. Suzuki*, Masafumi Yamaguchi

Proc. 270th Meeting of The Electrochemical Society   272 - 277   2005

Chemical beam epitaxy of InGaAsN films for multi-junction tandem solar cells Reviewed

H. S. Lee*, K. Nishimura 修士2*, Y. Yagi 2004修士修了・豊田自動織機*, M. Tachibana*, N. J. Ekins-Daukes*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Journal of Crystal Growth   275   e1127 - e1130   2005

Effects of defects and impurities on minority carrier lifetime in cast-grown polycrystalline silicon Reviewed

Yoshio Ohshita, Y. Nishikawa 2004卒業・愛三工業*, M. Tachibana*, V. K. Tuong 2004博士満了*, T. Sasaki 修士1*, Nobuaki Kojima, S. Tanaka Nagoya Univ.*, Masafumi Yamaguchi

Journal of Crystal Growth   275   e491 - e494   2005

Nitrogen Incorporation in GaInNAs Grown by Chemical Beam Epitaxy for Multi-Junction Tandem Solar Cell Reviewed

K. Nishimura 修士2*, H. S. Lee*, H. Suzuki*, I. Gono 学部4*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc. 31st IEEE Photovoltaic Specialists Conference   722 - 724   2005

C60/a-C Superlattice Structures for Solar Cell Applications Reviewed

Nobuaki Kojima, T. Terayama 修士1*, H. Suzuki*, T. Imaizumi 学部4*, Masafumi Yamaguchi

Proc. 31st IEEE Photovoltaic Specialists Conference   118 - 120   2005

Carbon Incorporation Process in GaAsN Films Grown by Chemical Beam Epitaxy Using MMH or DMH as N Precursor Reviewed

H. Suzuki*, K. Nishimura 博士1*, H.S. Lee*, Yoshio Ohshita, I. Gono 2004卒業・愛知製鋼*, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings 2005 International Symposium on Dry Process   329 - 330   2005

Light Illumination Induced Effects on GaAsN Thin Films Grown by Chemical Beam Epitaxy Reviewed

H.S. Lee*, K. Nishimura 博士1*, H. Suzuki*, Yoshio Ohshita, T. Imai 修士1*, Nobuaki Kojima, Masafumi Yamaguchi

Proceedings 2005 International Symposium on Dry Process   331 - 332   2005

Defect Density Reduction in a-C Layers for C60/a-C Superlattice Solar Cells Reviewed

Nobuaki Kojima, T. Imaizumi 2004卒業・デンソーテクノ*, T. Terayama 修士2*, H. Suzuki*, Masafumi Yamaguchi

Tech. Digest 15th International Photovoltaic Science and Engineering Conference   584 - 585   2005

(In)GaAsN Solar Cells Grown by Chemical Beam Epitaxy (CBE) for Multijunction Applications Reviewed

K. Nishimura 博士1*, H.S. Lee*, H. Suzuki*, I. Gono 2004卒業・愛知製鋼*, T. Imai 修士1*, T. Kawahigashi 学部4*, Nobuaki Kojima, Yoshio Ohshita

Tech. Digest 15th International Photovoltaic Science and Engineering Conference   1214 - 1215   2005

Impurities in GaAsN Grown by Chemical Beam Epitaxy Using Monomethylhydrazine or Dimethyl-hidrazine as N Precursor Reviewed

H. Suzuki*, K. Nishimura*, H.S. Lee*, Yoshio Ohshita, I. Gono*, Nobuaki Kojima, Masafumi Yamaguchi

Tech. Digest 15th International Photovoltaic Science and Engineering Conference   381 - 382   2005

Improvement in Crystallization of InGaAsN Films by Light Illumination for High Efficiency Multi-Junction Tandem Solar Cell Reviewed

K. Nishimura 博士1*, H. S. Lee*, H. Suzuki*, I. Gono 2004卒業・愛知製鋼*, T. Imai 修士1*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proceedings20th European Photovoltaic Solar Energy Conference and Exhibition   542 - 545   2005

Conductivity Behavior of C60/a-C Superlattice Structures for Solar Cell Applications Reviewed

Nobuaki Kojima, Y. Sugiura 2003卒業・アイシン精機*, T. Terayama 修士1*, Masafumi Yamaguchi

Proc.19th European Photovoltaic Solar Energy Conference and Exhibition, (WIP/ETA, 2004)   62 - 64   2004

Consideration of Lattice-Mismatched InGaP/InGaAs/Ge 3-Junction Solar Cells Reviewed

Masafumi Yamaguchi, T. Takamoto 1998博士修了・SHARP*, T. Agui SHARP*, M. Kaneiwa SHARP*, K. Nishimura 修士2*, Y. Yagi 2004修士修了・豊田自動織機*, T. Sasaki 修士1*, N. J. Ekins-Daukes*, Nobuaki Kojima

Proc.19th European Photovoltaic Solar Energy Conference and Exhibition, (WIP/ETA, 2004)   3610 - 3613   2004

Chemical Beam Epitaxy of InGaAsN for Four-Junction Tandem Solar Cell Application Reviewed

K. Nishimura 修士2*, Y. Yagi 2004修士修了・豊田自動織機*, H. S. Lee*, N. J. Ekins-Daukes*, Yoshio Ohshita, Nobuaki Kojima, Masafumi Yamaguchi

Proc.19th European Photovoltaic Solar Energy Conference and Exhibition, (WIP/ETA, 2004)   3712 - 3714   2004

ENERGY LEVEL OF MINORITY CARRIER TRAP CENTERS INDUCED BY LIGHT ILLUMINATION IN B-DOPED Cz-Si SOLAR CELLS Reviewed

Tuong Khanh Vu 博士3*, Yoshio Ohshita, Yasutaka Yagi 修士2*, Nobuaki Kojima, Masafumi Yamaguchi

Proc. of the 3rd World Conference on Photovoltaic Energy Conversion、WCPEC-3   1025 - 1027   2003

Temperature dependence of electron spin resonance and electrical conductivity in P+-implanted C60 films and their derivatives Reviewed

N. F. Fahim National Research Center*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, B. N. Barsoum Cairo University*, A. E. Eid National Research Center*

Journal of Applied Physics   93 ( 5 )   2671 - 2675   2003

Energy level of minority carrier trap centers induced by light illumination in B-doped Cz-Si solar cells Reviewed

Tuong Khanh Vu 博士3*, Yoshio Ohshita, Yasutaka Yagi 修士2*, Nobuaki Kojima, Masafumi Yamaguchi

Materials Science in Semiconductor Processing   6   551 - 553   2003

Electron spin resonance studies on defects in phosphorus ion-implanted C60 films Reviewed

N. F. Fahim National Research Center*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, A. E. Eid National Research Center*, N. Dharmarasu (株)国際電気通信基礎技術研究所*

Solar Energy Materials and Solar Cells   75   411 - 420   2003

HIGH- SPEED GROWTH OF SILICON THIN FILMS BY EBEP-CVD USING SI2H6 Reviewed

Yagi Yasutaka 修士2*, Motegi Hideaki 2001修士修了・矢崎総業*, Yoshio Ohshita, Masafumi Yamaguchi, Nobuaki Kojima

Proc. of the 3rd World Conference on Photovoltaic Energy Conversion, WCPEC-3   1667 - 1670   2003

PHOTOCONDUCTIVITY PROPERTIES OF C60 / a-C SUPERLATTICE STRUCTURES AS A NEW MATERIAL FOR ABSORPTION LAYERS Reviewed

Nobuaki Kojima, Yusuke Sugiura 2003学部卒業・アイシン精機*, Masafumi Yamaguchi

Proc. of the 3rd World Conference on Photovoltaic Energy Conversion, WCPEC-3   130 - 132   2003

Chemical Beam Epitaxy System for High Efficiency Solar Cell Fabrication. Reviewed

Y. Yagi 修士2*, Yoshio Ohshita, K. Nishimura 修士1*, H. S. Lee*, Nobuaki Kojima, Masafumi Yamaguchi

Tech. Digest 14th International Photovoltaic Science and Engineering Conference, PVSEC-14   117 - 118   2003

Defects in Polycrystalline Silicon Study for High Effciency Solar Cells Application. Reviewed

T. K. Vu 博士3*, Y. Nishikawa 学部4*, Yoshio Ohshita, Kenji Araki Daido Steel Co.*, Nobuaki Kojima, Masami Tachibana*, Masafumi Yamaguchi

Tech. Digest 14th International Photovoltaic Science and Engineering Conference, PVSEC-14   239 - 240   2003

Optical and Electrical Properties of C60/a-C Superlattice Structures for Solar Cell Applications. Reviewed

Nobuaki Kojima, Y. Sugiura 2003学部卒業・アイシン精機*, T. Terayama 学部4*, Masafumi Yamaguchi

Tech. Digest 14th International Photovoltaic Science and Engineering Conference, PVSEC-14   697 - 698   2003

A comprehensive electron paramagnetic resonance study of influence of annealing on defect center in phosphorus ion-implanted C60 films Reviewed

N. F. Fahim National Research Center*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, A. Eid National Research Center*, B. Barsoum Cairo University*

Materials Science in Semiconductor Processing   5 ( 6 )   483 - 490   2002

Fabrication Technique and Optical Properties of Carbon-Based Superlattice Structures Reviewed

Nobuaki Kojima, Masafumi Yamaguchi

Proceedings 17th European Photovoltaic Solar Energy Conference   314 - 316   2002

LOW TEMPERATURE ELECTRON PARAMAGNETIC RESONANCE STUDIES AND SPIN SUSCEPTIBILITY OF PHOSPHORUS-IMPLANTED C60 FILMS FOR SOLAR CELLS Reviewed

N. F. Fahim National Research Center*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, A. E. Eid National Research Center*, M. Khalil National Research Center*, N. Yossef National Research Center*

Proceedings 29th IEEE Photovoltaic Specialists Conference   1194 - 1197   2002

Electrical and optical properties of the B+ and P+ implanted C60 thin films Reviewed

N. Dharmarasu*, T. Sakai Ｈ１２修士修了*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, K. L. Narayanan*

Journal of Applied Physics   89 ( 1 )   318 - 322   2001.1

ESR STUDY OF STRUCTURAL DEFECT FORMATION IN P+-IMPLANTED AND ANNEALED C60 FILMS Reviewed

N. F. Fahim*, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita, N. Dharmarasu*, T. Sakai 2000修士修了・イムラ材料研究所*

Tech. Digest 12th Int. Photovoltaic Science and Engineering Conference   121 - 122   2001

Optical Properties of Carbon-Based Superlattice Structures for Solar Cell Applications Reviewed

Nobuaki Kojima, Masafumi Yamaguchi

Tech. Digest 12th Int. Photovoltaic Science and Engineering Conference   463 - 464   2001

Boron ion implantation effects in C60 films Reviewed

K. L. Narayanan*, O. Goetzberger*, A. Khan*, Nobuaki Kojima, Masafumi Yamaguchi

Solar Energy Materials and Solar Cells   65   29 - 35   2001

Fabrication of C60/Amorphous Carbon Superlattice Structures Reviewed

Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc International Symposium on Nanonetwork Materials 2001   349 - 352   2001

Low energy ion implantation and high energy heavy ion irradiation in C60 films Reviewed

K. L. Narayanan*, Masafumi Yamaguchi, N. Dharmarasu*, Nobuaki Kojima, D. Kanjilal Nuclear Science Centre*

Nuclear Instruments and Methods in Physics Research B   178   301 - 304   2001

Raman Study of The P-ion Implanted C60 Films Reviewed

T. Sakai 2000修士修了・イムラ材料研究所*, Nobuaki Kojima, N. F. Fahim*, Masafumi Yamaguchi

Tech. Digest 12th Int. Photovoltaic Science and Engineering Conference   149 - 150   2001

Analysis of photovoltaic properties of C60?Si heterojunction solar cells Reviewed

Nobuaki Kojima, Masafumi Yamaguchi, N. Ishikawa H10修士修了*

Japanese Journal of Applied Physics.Part 1   39 ( ３A )   1176 - 1179   2000.3

Post Annealing Studies of C60 Ion Implanted Thin Films Reviewed

N. Dharmarasu*, K. L. Narayanan*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

MRS 2000 Fall Meeting   2000

太陽電池用新素材の研究開発（招待論文） Reviewed

Masafumi Yamaguchi, Nobuaki Kojima

機械の研究   52 ( 5 )   547 - 554   2000

High-energy electron irradiation effects on C60 films Reviewed

A. Khan*, Nobuaki Kojima, Masafumi Yamaguchi, K. L. Narayanan*, O. Goetzberger*

Journal of Applied Physics   87 ( 9 )   4620 - 4622   2000

Ion Implantation Effects in C60 Films Reviewed

K. L. Narayanan*, N. Dharmarasu*, Nobuaki Kojima, T. Sakai H12修士修了*, Masafumi Yamaguchi

The 3rd Korea-Japan Joint Seminar on Photovoltaics   165 - 169   2000

Recombination center in C60/p-Si heterojunction and solar cells Reviewed

Aurangzeb Khan*, Masafumi Yamaguchi, Nobuaki Kojima

Solid-State Electronics   44   1471 - 1475   2000

Ion Implantation Induced Enhancement in Conductivity of C60 Films Reviewed

K. L. Narayanan*, Nobuaki Kojima, Masafumi Yamaguchi

International Symposium on Nanonetwork Materials 2001   2000

Low Energy Ion Implantation and High Energy Heavy Ion Irradiation in C60 Thin Films Reviewed

K. L. Narayanan*, Masafumi Yamaguchi, Nobuaki Kojima, D. K. Avasthi NSC,New Delhi, INDIA*, D. Kanjilal NSC, New Delhi, INDIA*

European Materials Research Society 2000 Spring Meeting   2000

The Effects of Boron and Phosphorous Ion Implantation in C60 Thin Films Reviewed

T. Sakai Ｈ１２修士修了*, N. Dharmarasu*, O. Goetzberger 元ＰＤ研究員*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Proc.28th IEEE Photovoltaic Specialists Conference   948 - 950   2000

Analysis of Boron-Ion-Implanted p-C60/n-Si Heterojunction Solar Cells Reviewed

K. L. Narayanan*, Nobuaki Kojima, Masafumi Yamaguchi, N. Dharmarasu*, T. Sakai Ｈ１２修士修了*, oetzberger 元ＰＤ研究員*, A. Khan*

Proc.16th European Photovoltaic Solar Energy Conference   1   146 - 149   2000

Radical Beam Doping in C60 Films for Solar Cell Application Reviewed

Nobuaki Kojima, Masafumi Yamaguchi

Proc.16th European Photovoltaic Solar Energy Conference   1   203 - 205   2000

Approach to The Carbon-Based Superlattice Structure Solar Cell Reviewed

Nobuaki Kojima, O. Goetzberger 元PD研究員*, Yoshio Ohshita, Masafumi Yamaguchi

Proc.28th IEEE Photovoltaic Specialists Conference   873 - 875   2000

Boron ion implantation induced amorphization and formation of p-type conductivity in C60 thin films Reviewed

K. L Narayanan 元PD研究員*, Nobuaki Kojima, N. Dharmarasu*, T. Sakai*, Masafumi Yamaguchi

Materials Research Society 1999 Fall Meeting,U5.31   1999

Deposition and characterization of amorphous carbon by molecular beam deposition (MBD) Reviewed

O. Goetzberger PD研究員*, Nobuaki Kojima, A. Khan 研究補助者*, Masafumi Yamaguchi, K. Araki 受託研究員*

Tech.Digest 11th International Photovoltaic Science and Engineering Conference   301 - 302   1999

Boron ion implantation effects in C60 films for homo-junction solar cells. Reviewed

K. L. Narayanan 元PD研究員*, A. Khan 研究補助者*, O. Goetzberger PD研究員*, Nobuaki Kojima, Masafumi Yamaguchi

Tech.Digest 11th International Photovoltaic Science and Engineering Conference   641 - 642   1999

Deep level transient spectroscopy of C60/p-Si heterojunction solar cell interface states Reviewed

A. Khan 研究補助者*, Masafumi Yamaguchi, Nobuaki Kojima

Tech.Digest 11th International Photovoltaic Science and Engineering Conference   701 - 702   1999

Nitrogen doping effects in C60 films by RF plasma source Reviewed

Nobuaki Kojima, Masafumi Yamaguchi

1999 ECS Joint International Conference   1493   1999

Arsenic ion implantation induced structural effects in C60 films Reviewed

K. L. Narayanan 元PD研究員*, Nobuaki Kojima, K. Yamaguchi 受託研究員*, N. Ishikawa H10修士修了*, Masafumi Yamaguchi

Journal of Materials Science   34   5227 - 5231   1999

Deposition and annealing studies of diamond-like carbon grown by molecular beam deposition Reviewed

O. Goetzberger PD研究員*, Nobuaki Kojima, A. Khan 研究補助者*, Masafumi Yamaguchi

Materials Research Society 1999 Fall Meeting,U7.3   1999

Analysis of impurity diffusion from tunnel diodes and optimization for operation in tandem cells Reviewed

Nobuaki Kojima, M. Okamoto 防衛庁*, S. J. Taylor*, M-J. Yang*, T. Takamoto 博士2*, Masafumi Yamaguchi, K. Takahashi 日立電線*, T. Unno 同*

Solar Energy Materials and Solar Cells   50 ( 1-4 )   237 - 242   1998

Photovoltaic Effects of C60 in C60-Si Heterojunction Cell Reviewed

Nobuaki Kojima, N. Ishikawa 修士2*, M-J. Yang 元PD研究員*, Masafumi Yamaguchi

Proc. 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion   246 - 248   1998

Photovoltaic Effects and Photoconduction of C60 in C60-Si Heterojunction Cell Reviewed

Nobuaki Kojima, Naomi Ishikawa M2*, Ming-Ju Yang 元PD研究員*, Aurangzeb Khan 研究補助者*, Masafumi Yamaguchi

The 2nd Korea-Japan Joint Seminar on Photovoltaics   265 - 268   1998

Diffusion in C＼Si Doped GaAs tunnel Diodes Reviewed

S. J. Taylor*, M-J. Yang*, Nobuaki Kojima, Masafumi Yamaguchi

Proc.14th European Photovoltaic Solar Energy Conference   1702 - 1704   1997

Photoluminescence of C60 Thin Films with Different Crystallinity Grown by Molecular Beam Epitaxy Reviewed

Nobuaki Kojima, Masami Okamoto, Masafumi Yamaguchi

Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials(Proceedings of the 192nd Meeting of the Electrochemical Society Inc. and the 48th Annual Meeting of the International Society of Electrochemistry)   5   420 - 423   1997

（解説）集光太陽光発電日欧共同研究 Reviewed

山口　真史, 荒木建次*, 小島　信晃

半導体電力変換・モータドライブ合同研究会資料   13 - 18   2015.8

普及・拡大する太陽電池の将来技術 Reviewed

小島　信晃

WEB Journal   17 ( 8 )   29 - 32   2011.12

ソーラークエスト特別寄稿（第2回）チームⅠ集光型多接合太陽電池 Reviewed

小島　信晃

ハイテクノロジー   ( 1239 )   16 - 17   2010.10

多接合太陽電池開発と評価解析 Reviewed

山口　真史, 大下　祥雄, 小島　信晃, 佐々　木拓生

表面   48 ( 10 )   313 - 330   2010.10

化合物薄膜太陽電池の最新技術

山口　真史, 小島　信晃, 他*（第７章超高効率太陽電池　1.　超高効率太陽電池の展望、PP.220-226　4.　注目されるⅢ-Ⅴ-N系太陽電池、PP.248-255）

シーエムシー出版  2007.6  （ ISBN:978-4-8823-1686-2 ）

パワーエレクトロニクスハンドブック

山口　真史, 小島　信晃, 他104名*（2.2.3 太陽電池 1. まえがき,pp.1081-1083,4.Ⅲ―Ⅴ族化合物および宇宙用太陽電池,pp.1102-1105,5.太陽光発電システム,pp.1105-1110）

Ｒ＆Ｄプランニング  2002.2 

InGaAsN中のドナー、アクセプター性NH複合欠陥

塚本壮哉, 玉城大天, 小島信晃, 大下祥雄

第15回スマートエネルギー技術研究センターシンポジウム  ( 豊田工業大学 豊田喜一郎記念ホール )   2023.10 

層状GaSe/In2Se3薄膜のエピタキシャル成長における基板ステップの影響

藤田絢也, 小島信晃, 大下祥雄

第15回スマートエネルギー技術研究センターシンポジウム  ( 豊田工業大学 豊田喜一郎記念ホール )   2023.10 

Analysis of Climate Conditions Upon the Driving Distance of Photovoltaics-Powered Vehicles International conference

Masafumi Yamaguchi, Taizo Masuda*, Tsutomu Tanimoto*, Yosuke Tomita*, Yasuyuki Ota*, Kenji Araki*, Kensuke Nishioka*, Christian Thiel*, Anastasios Tsakalidis*, Arnulf Jaeger-Waldau*, Takashi Nakado*, Kazumi Yamada*, Tatsuya Takamoto*, Kenichi Okumura*, Akinori Satou*, Yusuke Zushi*, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

40th European Photovoltaic Solar Energy Conference (EUPVSEC2023)  ( Lisbon Congress Centre, Lisbon, Portugal )   2023.9 

Approaches for III-V/Si Tandem Solar Cells and Comparative Studies on Si Tandem Solar Cells International conference

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki, Tatsuya Takamoto*, Nobuaki Kojima, Yoshio Ohshita

40th European Photovoltaic Solar Energy Conference (EUPVSEC2023)  ( Lisbon Congress Centre, Lisbon, Portugal )   2023.9 

GaAs(001)微傾斜基板のステップ構造がGaSe/In2Se3薄膜のエピタキシャル方位に与える影響

藤田 絢也, 小島 信晃, 大下 祥雄

第84回応用物理学会秋季学術講演会  ( 熊本城ホール他3会場 )   2023.9 

2D-GaSe/In2Se3成膜における基板ステップ端構造の影響

藤田 絢也, 小島 信晃, 大下 祥雄

第20回「次世代の太陽光発電システム」シンポジウム   ( 京都テルサ＋オンライン )   2023.6 

2D-GaSe/InxSey Layer for Rapid ELO GaAs Technique International conference

Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

50th IEEE Photovoltaic Specialists Conference (PVSC-50)  ( Puerto Rico Convention Center, San Juan, Puerto Rico )   2023.6 

Analysis for effects of temperature rise of solar cell modules upon the driving distance of photovoltaics-powered vehicles International conference

Masafumi Yamaguchi, Taizo Masuda*, Tsutomu Tanimoto*, Yosuke Tomita*, Yasuyuki Ota*, Christian Thiel*, Anastasios Tsakalids*, Arnulf Jaeger-WAldau*, Takashi Nakado*, Kenji Araki*, Kensuke Nishioka*, Tatsuya Takamoto*, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

50th IEEE Photovoltaic Specialists Conference (PVSC-50)  ( Puerto Rico Convention Center, San Juan, Puerto Rico )   2023.6 

多接合よびSiタンデム太陽電池の損失解析と高効率化の動向

山口　真史, 中村　京太郎, 尾崎亮, 小島　信晃, 大下　祥雄

2023年第70回応用物理学会春季学術講演会 シンポジウム 化合物薄膜太陽電池の研究開発動向  ( 上智大学四谷キャンパス＋オンライン )   2023.3  応用物理学会

N-H Related Donors and Acceptors in InGaAsN International conference

Hirotaka Tamashiro, Nobuaki Kojima, Yoshio Ohshita

Korea-Japan University Joint Workshop on PV  ( Korea University, Seoul, Korea )   2023.3 

Effect of Initial Growth Process on Residual Strain in GaAs/Si International conference

Yuito Yasukochi, Nobuaki Kojima, Yoshio Ohshita

Korea-Japan University Joint Workshop on PV  ( Korea University, Seoul, Korea )   2023.3 

Development of High-efficiency Si Tandem Solar Cells for Vehicle Integrated Photovoltaics International conference

Kyotaro Nakamura, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita, Taizo Masuda*

7th International Conference on Advances in Functional Materials(AFM2023)  ( The Kyushu University, Centennial Hall, Fukuoka, Japan )   2023.1  American Association for Advances in Functional Materials LLC, BK21 Four HRD Physics Division, Sungkyunkwan University, Korea

Potential of Si tandem solar cells for PV-powered vehicle applications International conference

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

2022 MRS Fall Meeting & Exhibit  ( Hynes Convention Center and Sheraton Boston Hotel, USA & Online )   2022.12  Materials Research Society (MRS)

Effect of initial growth process on residual strain in GaAs/Si International conference

Yuito Yasukochi, Nobuaki Kojima Yoshio Ohshita

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33)  ( Nagoya Congress Center, Nagoya, Aichi, Japan )   2022.11  The Japan Photovoltaic Society

Mobility improvement of CBE-grown InGaAsN by using vicinal GaAs(001) substrate International conference

Hirotaka Tamashiro, Nobuaki Kojima, Yoshio Ohshita

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33)  ( Nagoya Congress Center, Nagoya, Aichi, Japan )   2022.11  The Japan Photovoltaic Society

Approaches for High-efficiency and Low-cost Si Tandem Solar Cells International conference

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima, Yoshio Ohshita

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33)  ( Nagoya Congress Center, Nagoya, Aichi, Japan )   2022.11  The Japan Photovoltaic Society

Inorganic lead halide perovskite nanocrystals for quantum cutting Si solar cell application: effect of anion exchange on PLQY International conference

Tomoya Yamada, Hyunju Lee*, Yoshio Ohshita, Nobuaki Kojima

33rd International Photovoltaic Science and Engineering Conference (PVSEC-33)  ( Nagoya Congress Center, Nagoya, Aichi, Japan )   2022.11  The Japan Photovoltaic Society

車載用高効率・低コストSiタンデム太陽電池の検討

山口　真史, 中村　京太郎, 尾崎 亮, 小島　信晃, 大下　祥雄, 高本 達也*, 内田 史朗*, 増田 泰造*

電子情報通信学会 電子部品・材料研究会  ( 信州大学 長野(工学)キャンパス+オンライン )   2022.10  電子情報通信学会

Overview and loss analysis of III-V single-junction and multi-junction solar cells International conference

Masafumi Yamaguchi, Frank Dimroth*, John Geisz*, Nicholas J. Ekins-Daukes*, Nobuaki Kojima, Yoshio Ohshita

8th World Conference on Photovoltaic Energy Conversion (WCPEC-8)  ( Milano Convention Centre, Italy & Online )   2022.9  WIP

Analysis for the potential of high-efficincy and low-cost vehicle-integrated photovoltaics International conference

Masafumi Yamaguchi, Taizo Masuda*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Tsutomu Tanimoto*, Yusuke Zushi*, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

8th World Conference on Photovoltaic Energy Conversion (WCPEC-8)  ( Milano Convention Centre, Italy & Online )   2022.9  WIP

車載用Siタンデム太陽電池の損失解析

山口　真史, 尾崎 亮, 中村　京太郎, 小島　信晃, 大下　祥雄, 高本 達也*、増田 泰造*

2022年第83回応用物理学会秋季学術講演会  ( 東北大学川内北キャンパス+オンライン )   2022.9  応用物理学会

Si上GaAs成膜において初期成長過程が残留歪の異方性に与える影響

安河内 唯人, 小島　信晃, 大下　祥雄

2022年第83回応用物理学会秋季学術講演会  ( 東北大学川内北キャンパス+オンライン )   2022.9  応用物理学会

GaAs(001)微傾斜基板上InGaAsNのキャリア移動度の温度依存性解析

玉城 大天, 小島　信晃, 大下　祥雄

2022年第83回応用物理学会秋季学術講演会  ( 東北大学川内北キャンパス+オンライン )   2022.9  応用物理学会

GaAs/Si成膜において初期成長過程が残留歪に与える影響

安河内 唯人, 小島　信晃, 大下　祥雄

第19回「次世代の太陽光発電システム」シンポジウム  ( 金沢市文化ホール+オンライン )   2022.6  日本太陽光発電学会

車載用高効率Siタンデム太陽電池の研究

山口　真史, 中村　京太郎, 尾崎 亮, 小島　信晃, 大下　祥雄, 高本 達也*、増田 泰造*

第19回「次世代の太陽光発電システム」シンポジウム  ( 金沢市文化ホール+オンライン )   2022.6  日本太陽光発電学会

Analysis for Solar Coverage and CO2 Emission Reduction of Photovoltaic-powered Vehicles International conference

Masafumi Yamaguchi, Taizo Masuda*, Takashi Nakado*, Kazumi Yamada*, Kenichi Okumura*, Akinori Satou*, Yasuyuki Ota*, Kenji Araki*, Kensuke Nishioka*, Nobuaki Kojima, Yoshio Ohshita

49th IEEE Photovoltaic Specialists Conference (PVSC-49)  ( Pennsylvania Convention Center, Philadelphia, USA )   2022.6  IEEE

Impact and Recent Approaches of Vehicle Integrated Solar Cell Modules International conference

Masafumi Yamaguchi, Taizo Masuda*, Tatsuya Takamoto*, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

The 8th Korea-Japan Joint Seminar on PV  ( Ramada Plaza Jeju, Jeju, Korea and Online )   2022.5  The Korea Photovoltaic Society, The Japan Photovoltaic Society, KETEP

Approaches for High-efficiency and Low-cost Multi-junction Solar Cells International conference

Masafumi Yamaguchi, Kyotaro Nakamura, Ryo Ozaki, Nobuaki Kojima, Yoshio Ohshita

2022 MRS Spring Meeting & Exhibit  ( Hawaiʻi Convention Center, Honolulu, Hawaii, USA and Virtual )   2022.5  Materials Research Society (MRS)

II-VI、カルコゲナイド系タンデム太陽電池の高効率化 International conference

山口　真史, 反保 衆志*、柴田 肇**, 小島　信晃, 大下　祥雄

2022年第69回応用物理学会春季学術講演会  ( ハイブリッド（青山学院大学相模原キャンパス） )   2022.3  応用物理学会

Effects of halogen composition controlled by ligand concentration on near IR luminescence of inorganic lead halide perovskite nanocrystals for quantum cutting application International conference

Tomoya Yamada, Lee Hyunju**, Nobuaki Kojima, Yoshio Ohshita

31st International Photovoltaic Science and Engineering Conference (PVSEC-31)  ( Online )   2021.12  PVSEC-31 Organizing Committee

Loss analysis for perovskite/Si tandem solar cells International conference

Masafumi Yamaguchi, Kan-Hua LEE*, Ryo Ozaki*, Kyotaro Nakamura, Nobuaki Kojima, Yoshio Ohshita

2021 MRS Fall Meeting & Exhibit  ( Hybrid Conference (Hynes Convention Center/Sheraton Boston Hotel, Boston, Massachusetts, USA) )   2021.12  Materials Research Society (MRS)

Overview of Concentrator Solar Cells and Analysis for their Non-radiative Recombination International conference

Masafumi Yamaguchi, Kan-Hua Lee*, Daisuke Sato*, Kenji Araki**, Nobuaki Kojima, Yoshio Ohshita

Solar World Congress (SWC2021)   ( Online )   2021.10  The International Solar Energy Society (ISES)

量子カットを目的としたペロブスカイト量子ドットのハロゲン組成制御及び発光特性 International conference

山田 智哉、Lee Hyunju**, 小島　信晃, 大下　祥雄

2021年第82回応用物理学会秋季学術講演会  ( オンライン )   2021.9  応用物理学会

Development of high-efficiency solar cell modules for PV-powered vehicles International conference

Masafumi Yamaguchi, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Christian Thiel*, Anastasios Tsakalidis*, Arnulf Jäger-Waldau*, Taizo Masuda*, Kenichi Okumura*, Takashi Nakado*, Kazumi Yamada*, Yusuke Zushi*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima, Yoshio Ohshita

38th European Photovoltaic Solar Energy Conference and Exhibition  ( Online )   2021.9  WIP

Analysis of Si Bottom Cell Properties for Si Tandem Solar Cells International conference

Masafumi Yamaguchi, Kan-Hua Lee **, Ryo Ozaki*, Kyotaro Nakamura, Patrick Schygulla*, Frank Dimroth**, Nobuaki Kojima, Yoshio Ohshita

2021 International Conference on Solid State Devices and Materials (SSDM2021)  ( VIRTUAL conference )   2021.9  SSDM2021 Organizing Committee

(Plenary) Si Tandem Solar Cells for PV-Powered Vehicles Invited International conference

Masafumi Yamaguchi, Ryo Ozaki*, Kyotaro Nakamura, Nobuaki Kojima, Yoshio Ohshita

Global Photovoltaic Conference 2021 (GPVC 2021)  ( Hybrid Conference (Kimdaejung Convention Center, Gwangju, Korea) )   2021.7  Korea Photovoltaic Society (KPVS)

Structural Characterization of GaAs Layer Grown on 2D-GaSe/Si(111) Substrate for Rapid Epitaxial Lift Off International conference

Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

48th IEEE Photovoltaic Specialists Conference (PVSC48)  ( Virtual Meeting )   2021.6  IEEE

Potential of Si Tandem Solar Cell Modules for PV-Powered Vehicles International conference

Masafumi Yamaguchi, Kenji Araki*, Yasuyuki Ota*, Kensuke Nishioka*, Tatsuya Takamoto*, Taizo Masuda*, Kenichi Okumura*, Akinori Satou*, Takashi Nakado*, Kazumi Yamada*, Yusuke Zushi*, Tsutomu Tanimoto**, Kyotaro Nakamura, Ryo Ozaki*, Nobuaki Kojima, Yoshio Ohshita

48th IEEE Photovoltaic Specialists Conference (PVSC48)  ( Virtual Meeting )   2021.6  IEEE

Analysis for Efficiency Potential of II-VI Compound, Chalcopyrite and Kesterite Based Tandem Solar Cells International conference

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata**, Nobuaki Kojima, Yoshio Ohshita

2021 Virtual MRS Spring Meeting   ( Virtual Meeting )   2021.4  Materials Research Society (MRS)

（招待）高効率化のアプローチ： タンデム化とフォトンリサイクリング Invited International conference

山口　真史, 小島　信晃, 大下　祥雄

2021年第68回応用物理学会春季学術講演会＜シンポジウム＞多元系化合物が牽引する太陽光利用拡大と応用物理  ( オンライン )   2021.3  応用物理学会

Defect Analysis of Crystalline Si Solar Cells by Learning Radiation-induced Defects in Si International conference

Masafumi Yamaguchi, Takefumi Kamioka **, Nobuaki Kojima, Yoshio Ohshita

2020 MRS Virtual Spring/Fall Meeting & Exhibit  ( Virtual Meeting )   2020.11  Materials Research Society (MRS)

In-Plane Anisotropy of Strain Relaxation In GaAS/Si Growth International conference

Kizuku Kawaguchi*, Yu-Cian Wang **, Nobuaki Kojima, Yoshio Ohshita

The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30) & Global Photovoltaic Conference 2020 (GPVC 2020)  ( Hybrid Conference (Jeju, Republic of Korea) )   2020.11  Korea Photovoltaic Society (KPVS)

Reduction of Nitrogen-Related Scattering Center by Indium Incorporation In GaAsN International conference

Misaki Hirahara, Kazushi Toyoda*, 小Nobuaki Kojima, Yoshio Ohshita

The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30) & Global Photovoltaic Conference 2020 (GPVC 2020)  ( Hybrid Conference (Jeju, Republic of Korea) )   2020.11  Korea Photovoltaic Society (KPVS)

Low Dislocation Density III-V on Si by Low Temperature Growth Towards High-Efficiency III-V/Si Tandem Solar Cells International conference

Yu-Cian Wang **, Nobuaki Kojima, Akio Yamamoto **, Yoshio Ohshita, Masafumi Yamaguchi

The 30th International Photovoltaic Science and Engineering Conference (PVSEC-30) & Global Photovoltaic Conference 2020 (GPVC 2020)  ( Hybrid Conference (Jeju, Republic of Korea) )   2020.11  Korea Photovoltaic Society (KPVS)

GaAsNへのIn添加によるN起因散乱の低減 International conference

平原 岬, 豊田 和史*, 小島　信晃, 大下　祥雄

第17回次世代の太陽光発電システムシンポジウム  ( オンライン )   2020.10  日本太陽光発電学会

Low temperature growth for low dislocation density in III-V on Si towards high-efficiency III-V/Si tandem solar cells International conference

Yu-Cian Wang **, Nobuaki Kojima, Akio Yamamoto **, Yoshio Ohshita, Masafumi Yamaguchi

第17回次世代の太陽光発電システムシンポジウム  ( オンライン )   2020.10  日本太陽光発電学会

GaAs/Si 成膜における歪緩和の面内異方性 International conference

川口 生倫*, Yu-Cian Wang*, 小島　信晃, 大下　祥雄

第17回次世代の太陽光発電システムシンポジウム  ( オンライン )   2020.10  日本太陽光発電学会

Effectiveness of Low Temperature Growth for Low Dislocation Density in III-V on Si Towards High-Efficiency III-V/Si Tandem Solar Cells International conference

Yu-Cian Wang **, Nobuaki Kojima, Akio Yamamoto **, Yoshio Ohshita, Masafumi Yamaguchi

2020 International Conference on Solid State Devices and Materials (SSDM2020)  ( VIRTUAL conference )   2020.9  SSDM2020 Organizing Committee

Overview and Efficiency Potential Analysis of Concentrator Solar Cells International conference

Masafumi Yamaguchi, Daisuke Sato **, Kenji Araki, Nobuaki Kojima

2020 International Conference on Solid State Devices and Materials (SSDM2020)  ( VIRTUAL conference )   2020.9  SSDM2020 Organizing Committee

Analysis for Non-radiative Recombination and Resistance Losses in Chalcopyrite and Kesterite Solar Cells International conference

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata*, Kan-Hua Lee**, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

2020 International Conference on Solid State Devices and Materials (SSDM2020)  ( VIRTUAL conference )   2020.9  SSDM2020 Organizing Committee

Development of High-Efficiency and Low-Cost Solar Cells for PV-Powered Vehicles Applications International conference

Masafumi Yamaguchi, Kenji Araki, Daisuke Sato **, Nobuaki Kojima, Tatsuya Takamoto*, Taizo Masuda*, Akinori Satou*, Kazumi Yamada*, Takashi Nakado*, Mitsuhiro Yamazaki**

37th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2020)  ( Online )   2020.9  WIP

Epitaxial GaAs Lift-off from Si(111) Wafer via 2D-GaSe Buffer Layer International conference

Nobuaki Kojima, Yu-Cian Wang*, Yoshio Ohshita, Masafumi Yamaguchi

37th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2020)  ( Online )   2020.9  WIP

Importance of Developing High-Efficiency Solar Cells for PV-Powered Vehicles International conference

Masafumi Yamaguchi, Kenji Araki, Nobuaki Kojima, Tatsuya Takamoto*, Taizo Masuda*, Akinori Satou*, Kazumi Yamada*, Mitsuhiro Yamazaki**

47th IEEE Photovoltaic Specialists Conference (PVSC47)  ( Virtual Meeting )   2020.6  IEEE

Overview and Loss Analysis of High-Efficiency III-V Compound Single-Junction Solar Cells International conference

Masafumi Yamaguchi, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

47th IEEE Photovoltaic Specialists Conference (PVSC47)  ( Virtual Meeting )   2020.6  IEEE

GaAs/Si₂段階成長膜のその場X線逆格子マッピング測定 International conference

川口 生倫*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 佐々木 拓生 **

2020年第67回応用物理学会春季学術講演会  ( 上智大学 四ツ谷キャンパス　東京都千代田区 )   2020.3  応用物理学会

(Invited) Next Generation Solar Cells and PV-Powered Vehicle Applications Invited International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Daisuke Sato, Nobuaki Kojima

4th International Conference on Fossil and Renewable Energy (F&R Energy-2020)   ( DoubleTree by Hilton Houston Intercontinental Airport, Houston, Texas, USA )   2020.2  United Scientific Group

Overview of Si Tandem Solar Cells and Approaches to PV-Powered Vehicle Applications International conference

Masafumi Yamaguchi, リ　カンファ, Daisuke Sato, Kenji Araki, Nobuaki Kojima, Tatsuya Takamoto*, Taizo Masuda*, Akinori Satou**

2019 MRS Fall Meeting & Exhibit  ( Hynes Convention Center/Sheraton Boston Hotel, Boston, Massachusetts, USA )   2019.12  Materials Research Society (MRS)

(Keynote) Importance of Photovoltaic (PV) for Creating Future Clean Energy Society and Our Approaches of PV-Powered Vehicle Applications Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Daisuke Sato, Nobuaki Kojima, Taizo Masuda*, Akinori Satou**

4th International Conference on New Energy and Applications (ICNEA 2019)  ( JICA Yokohama Center, Yokohama, Kanagawa, Japan )   2019.11  International Journal of Smart Grid and Clean Energy (SGCE)

Multi-step Growth of GaAs on 4^o Vicinal Si (111) with Metallic Selenide Buffers International conference

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

29th International Photovoltaic Science and Engineering Conference (PVSEC-29)  ( Qujiang International Conference Center, Xian, Shaanxi, China )   2019.11  China Renewable Energy Society

Heat-resistant 2D-metal Selenides as a Mechanical Cleavage Layer for the GaAs Lift-off International conference

Nobuaki Kojima, ワン　ユ チェン, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

29th International Photovoltaic Science and Engineering Conference (PVSEC-29)  ( Qujiang International Conference Center, Xian, Shaanxi, China )   2019.11  China Renewable Energy Society

Effect of the off-cut Direction of Si(111) Substrate on 2D-In₂Se₃ Twin Formation as a Mechanical Cleavage Layer for the GaAs Lift-off International conference

Kei Kawakatsu*, ワン　ユ チェン, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

29th International Photovoltaic Science and Engineering Conference (PVSEC-29)  ( Qujiang International Conference Center, Xian, Shaanxi, China )   2019.11  China Renewable Energy Society

(Plenary) Super-high Efficiency III-V Multi-junction and Concentrator Solar Cells, and PV-powered Vehicle Applications Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Daisuke Sato, Nobuaki Kojima, Taizo Masuda*, Akinori Satou*, Tatsuya Takamoto*, Hiroyuki Yamada**

29th International Photovoltaic Science and Engineering Conference (PVSEC-29)  ( Qujiang International Conference Center, Xian, Shaanxi, China )   2019.11  China Renewable Energy Society

(Keynote) Overview of Si tandem solar cells and potential of automobile applications Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Daisuke Sato, Nobuaki Kojima, Taizo Masuda*, Akinori Satou*, Tatsuya Takamoto**

3rd International Conference on Materials Science and Materials Chemistry  ( Fleming’s Conference Hotel Wien, Vienna, Austria )   2019.10  Allied Academies

Si(111)微傾斜基板のオフ方向が2D-In₂Se₃薄膜の結晶方位に与える影響 International conference

川勝 桂*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 山口　真史

2019年第80回応用物理学会秋季学術講演会  ( 北海道大学 札幌キャンパス　北海道札幌市 )   2019.9  応用物理学会

Metallic selenides as the buffers for GaAs grown on Si (111) International conference

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

2019年第80回応用物理学会秋季学術講演会  ( 北海道大学 札幌キャンパス　北海道札幌市 )   2019.9  応用物理学会

2D-In₂Se₃を利用したSi(111)上GaAsエピ層の薄層剥離 International conference

小島　信晃, ワン　ユ チェン, 川勝 桂*, 山本 暠勇*, 大下　祥雄, Masafumi Yamaguchi

2019年第80回応用物理学会秋季学術講演会  ( 北海道大学 札幌キャンパス　北海道札幌市 )   2019.9  応用物理学会

Some Approaches of PV-Powered Vehicles Applications International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda*, Akinori Satou*, Mami Hasegawa*, Hiroyuki Yamada**

36th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2019)  ( Marseille Chanot Convention and Exhibition Centre, Marseille, France )   2019.9  WIP

Analysis for Efficiency Potential of Perovskite Solar Cells and Perovskite/Si Tandem Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, ワン　ユ チェン, Kenji Araki, Nobuaki Kojima

36th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2019)  ( Marseille Chanot Convention and Exhibition Centre, Marseille, France )   2019.9  WIP

Overview of Concentrator Solar Cells and Analysis for Their Non-Radiative Recombination International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda*, Akinori Satou*, Mami Hasegawa*, Hiroyuki Yamada**

36th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2019)  ( Marseille Chanot Convention and Exhibition Centre, Marseille, France )   2019.9  WIP

(Invited) Solar Cells for Cars Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Kyotaro Nakamura, Yoshio Ohshita, Taizo Masuda*, Akinori Satou*, Kazumi Yamada*, Tatsuya Takamoto*, Takehiko Sato*, Mitsuhiro Yamazaki*, Hiroyuki Yamada**

29th Workshop on Crystalline Silicon Solar Cells and Modules: Materials and Processes (29th Annual NREL Silicon Workshop)   ( Winter Park Mountain Lodge, Winter Park, Colorado, USA )   2019.8  NREL

宇宙用Si太陽電池の動向と先端Si 太陽電池の放射線耐性の解析 International conference

山口　真史, リ　カンファ, 荒木　建次, 小島　信晃, 奥野 泰希*、今泉 充**

第16回次世代の太陽光発電システムシンポジウム  ( 宮崎市民プラザ　宮崎県宮崎市 )   2019.7  日本学術振興会産学協力研究委員会第175委員会

Si(111)微傾斜基板上2D-In2Se3成膜に基板オフ方向が与える影響 International conference

川勝 桂*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 山口　真史

第16回次世代の太陽光発電システムシンポジウム  ( 宮崎市民プラザ 宮崎県宮崎市 )   2019.7  日本学術振興会産学協力研究委員会第175委員会

Improved GaAs quality on 4°vicinal Si(111) with metallic selenides buffers by annealing GaAs at the initial growth International conference

ワン　ユ チェン, Nobuaki Kojima, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

第16回次世代の太陽光発電システムシンポジウム  ( 宮崎市民プラザ 宮崎県宮崎市 )   2019.7  日本学術振興会産学協力研究委員会第175委員会

その場X線逆格子マッピングによる低温MEE層挿入GaAs/Si成膜過程の観察 International conference

川口 生倫*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 山口　真史

第16回次世代の太陽光発電システムシンポジウム  ( 宮崎市民プラザ 宮崎県宮崎市 )   2019.7  日本学術振興会産学協力研究委員会第175委員会

Analysis for Non-Radiative Recombination Loss and Radiation Degradation of Si Space Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Yasuki Okuno*, Mitsuru Imaizumi**

46th IEEE Photovoltaic Specialists Conference (PVSC 46)  ( Sheraton Grand Chicago, Chicago, Illinois, USA )   2019.6  IEEE

Proposals for Accelerating Photovoltaics Installations in Japan and Further Developments of Science and Technologies of Photovoltaics International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Satou**

46th IEEE Photovoltaic Specialists Conference (PVSC 46)  ( Sheraton Grand Chicago, Chicago, Illinois, USA )   2019.6  IEEE

GaAs grown on Si (111) by inserting metal selenides films International conference

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

46th IEEE Photovoltaic Specialists Conference (PVSC 46)  ( Sheraton Grand Chicago, Chicago, Illinois, USA )   2019.6  IEEE

Epitaxial GaAs Lift Off via III-VI Layered Compounds International conference

Nobuaki Kojima, ワン　ユ チェン, Kei Kawakatsu*, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

46th IEEE Photovoltaic Specialists Conference (PVSC 46)  ( Sheraton Grand Chicago, Chicago, Illinois, USA )   2019.6  IEEE

Analysis for Non-Radiative Recombination in Perovskite and Perovskite/Si Tandem Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima

2019 MRS Spring Meeting and Exhibit  ( Phoenix Convention Center and nearby Sheraton Grand Phoenix, Phoenix, Arizona, USA )   2019.4  Materials Research Society

（招待）放射光を用いた太陽電池の評価 Invited International conference

大下　祥雄, 神岡武文 **, リ　ヒュンジュ, 小椋厚志 **, 小島　信晃, 鈴木秀俊 **

第150回結晶工学分科会研究会  ( 機械振興会館 東京都港区芝公園 )   2019.4  応用物理学会 結晶工学分科会

(Invited)High Efficiency and Low-cost Concentrator Solar Cells Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima

Global Photovoltaic Conference 2019 (GPVC2019)  ( Kimdaejung Convention Center, Gwangju, Korea )   2019.3  Korea Photovoltaic Society, GPVC 2019 Organizing Committee

Analysis for Efficiency Potential of Perovskite Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima

The 2018 MRS Fall Meeting & Exhibit  ( Hynes Convention Center and Sheraton Boston Hotel, Boston, MA, USA )   2018.11  Materials Research Society

Analysis for Non-radiative Recombination in Quantum Dot Solar Cells and Materials International conference

Masafumi Yamaguchi, Lin Zhu**, リ　カンファ, Hidefumi Akiyama*, Yoshihiko Kanemitsu**, Kenji Araki, Nobuaki Kojima

The 7th Korea-Japan Joint Seminar on PV  ( Koreana Hotel, Seoul, Korea )   2018.11  Korea Photovoltaic Society (KPVS) and the 175th Committee of Japan Society for the Promotion of Science (JSPS)

Overview for Efficiency Potential of Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima

The 7th Korea-Japan Joint Seminar on PV  ( Koreana Hotel, Seoul, Korea )   2018.11  Korea Photovoltaic Society (KPVS) and the 175th Committee of Japan Society for the Promotion of Science (JSPS)

GaAs Epitaxial Layers Grown on Ga2Se3/In2Se3 for Epitaxial Lift-off by Using Cleavage of α-In2Se3 Layered Structures International conference

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu*, Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

The 7th Korea-Japan Joint Seminar on PV  ( Koreana hotel, Seoul, Korea )   2018.11  Korea Photovoltaic Society (KPVS) and the 175th Committee of Japan Society for the Promotion of Science (JSPS)

Analysis for non-radiative recombination loss in InGaN and InGaAsN solar cells for multi-junction applications International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita

International Workshop on Nitride Semiconductors (IWN2018)  ( Ishikawa Ongakudo, ANA Crowne Plaza Hotel Kanazawa & Motenashi-Dome, Kanazawa, Japan )   2018.11  IWN2018 organizing committee

(Keynote)Overview of Solar Cell R&D and Approaches to Automobile Applications Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Satou**, Hiroyuki Yamada**

15th International Conference and Exhibition on Materials Science and Engineering  ( Embassy Suites by Hilton Atlanta Airport, GA, USA )   2018.11  Conferenceseries LLC Ltd

層状化合物In2Se3エピタキシャル膜の双晶ドメイン評価 International conference

川勝 桂*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学グリーン電子素子・材料研究センター最終年度シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2018.11  豊田工業大学グリーン電子素子・材料研究センター

(In)GaAsN材料中のN-H欠陥に関する研究 International conference

豊田和史*, 小島　信晃, 大下　祥雄

豊田工業大学グリーン電子素子・材料研究センター最終年度シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2018.11  豊田工業大学グリーン電子素子・材料研究センター

P型単結晶Si太陽電池の電圧誘起劣化とNa, Li拡散の関係 International conference

脇田陸、神岡武文**, リ　ヒュンジュ, 大下　祥雄, 小島　信晃

豊田工業大学グリーン電子素子・材料研究センター最終年度シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2018.11  豊田工業大学グリーン電子素子・材料研究センター

Analysis for Non-Radiative Recombination in Quantum Dot Solar Cells and Materials International conference

Masafumi Yamaguchi, Lin Zhu*, Hidefumi Akiyama*, Yoshihiko Kanemitsu**, リ　カンファ, Kenji Araki, Nobuaki Kojima

35th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2018)  ( SQUARE, Brussels, Belgium )   2018.9  WIP

RPD-ITO堆積プロセスにおける光誘起ダメージの検討 International conference

磯貝勇樹、神岡武文**, リ　ヒュンジュ, 小島　信晃, 大下　祥雄

第79回応用物理学会 秋季学術講演会  ( 名古屋国際会議場　愛知県名古屋市 )   2018.9  応用物理学会

層状化合物In2Se3エピタキシャル膜の双晶ドメイン評価 International conference

川勝 桂*, ワン　ユ チェン, 小島　信晃, 大下　祥雄, 山口　真史

第15回次世代の太陽光発電システムシンポジウム  ( ホテルさっぽろ芸文館　北海道札幌市 )   2018.7  日本学術振興会産学協力研究委員会第１７５委員会

High efficiency static concentrator lens array for automobile and building integrated photovoltaics International conference

リ　カンファ, Kenji Araki, Nobuaki Kojima, Masafumi Yamaguchi

第15回次世代の太陽光発電システムシンポジウム  ( ホテルさっぽろ芸文館　北海道札幌市 )   2018.7  日本学術振興会産学協力研究委員会第１７５委員会

Mechanical epitaxial lift off of GaAs epitaxial layers by using cleavage of In2Se3 layered structures International conference

ワン　ユ チェン, Nobuaki Kojima, Kei Kawakatsu，Akio Yamamoto*, Yoshio Ohshita, Masafumi Yamaguchi

第15回次世代の太陽光発電システムシンポジウム  ( ホテルさっぽろ芸文館　北海道札幌市 )   2018.7  日本学術振興会産学協力研究委員会第１７５委員会

Super-Multijunction Cell, A New Solar Cell Overcoming the Spectrum Loss of Multijunction Cells International conference

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

Grand Renewable Energy 2018 International Conference and Exhibition (GRE2018)  ( Pacifico Yokohama, Japan )   2018.6  The Grand Renewable Energy 2018 Organizing Committee

Analysis for Non-radiative Recombination Losses in Chalcopyrite and Kesterite Solar Cells International conference

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata**, リ　カンファ, Kenji Araki, Nobuaki Kojima

The 2018 E-MRS Spring Meeting and Exhibit  ( Palais de la Musique et des Congres, Strasbourg, France )   2018.6  European Materials Research Society

How Does R&D on the Car-Roof PV Impact to the Entire PV Technologies? International conference

Kenji Araki, リ　カンファ, Nobuaki Kojima, Masafumi Yamaguchi

Grand Renewable Energy 2018 International Conference and Exhibition (GRE2018)  ( Pacifico Yokohama, Japan )   2018.6  The Grand Renewable Energy 2018 Organizing Committee

Analysis for Efficiency Potential of Chalcopyrite and Kesterite Solar Cells International conference

Masafumi Yamaguchi, Hitoshi Tampo*, Hajime Shibata**, リ　カンファ, Kenji Araki, Nobuaki Kojima

World Conference on Photovoltaic Energy Conversion (WCPEC-7)  ( Hilton Waikoloa Village, Hawaii, USA )   2018.6  IEEE

XRD Pole Figure Analysis of In2Se3 Zinc-Blende Like (ZBL) Van der Waals Template for Epitaxial GaAs Lift Off International conference

Nobuaki Kojima, ワン　ユ チェン, Kei Kawakatsu*, Yoshio Ohshita, Masafumi Yamaguchi

World Conference on Photovoltaic Energy Conversion (WCPEC-7)  ( Hilton Waikoloa Village, Hawaii, USA )   2018.6  IEEE

Low-Temperature Grown Gallium Arsenide on Silicon by Using Migration-Enhanced Epitaxy International conference

ワン　ユ チェン, Akio Yamamoto*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

World Conference on Photovoltaic Energy Conversion (WCPEC-7)  ( Hilton Waikoloa Village, Hawaii, USA )   2018.6  IEEE

Achieving Wide-Acceptance Angle and High On-Axis Performance Static Low-Concentration Module Using Hybrid Lens Arrays International conference

リ　カンファ, Kenji Araki, Nobuaki Kojima, Masafumi Yamaguchi

The 14th International Conference on Concentrator Photovoltaic Systems (CPV-14)  ( La Central Puertollano Ferial, Puertollano, Spain )   2018.4  CPV Consortium

Cost-Competitiveness of Hybrid III-V-Si Concentrator Photovoltaic Systems International conference

リ　カンファ, Kenji Araki, Nobuaki Kojima, Masafumi Yamaguchi

The 14th International Conference on Concentrator Photovoltaic Systems (CPV-14)  ( La Central Puertollano Ferial, Puertollano, Spain )   2018.4  CPV Consortium

Analysis for efficiency potential of Si tandem solar cells and approach to automobile application International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Sato**

The 2018 MRS Spring Meeting and Exhibit  ( Phoenix Convention Center/Sheraton Grand Phoenix, AZ, USA )   2018.4  The Materials Research Society

RPDダメージ解析：ITO/SiO2/Si構造デバイスにおけるライフタイムおよび界面特性の相関の検討 International conference

磯貝 勇樹*, 神岡　武文, リ　ヒュンジュ, 小島　信晃, 大下　祥雄

第65回応用物理学会 春季学術講演会  ( 早稲田大学西早稲田キャンパス（東京都新宿区） )   2018.3  応用物理学会

Ge CHEMICAL VAPOR DEPOSITION USING t-C4H9GeH4 FOR MULTIJUNCTION SOLAR CELLS International conference

Tomohiko Hara, Ryota Katayama*, Nobuaki Kojima, Yoshio Ohshita

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

INFLUENCE OF ITO-RPD PROCESS ON EFFECTIVE MINORITY CARRIER LIFETIME IN REACTIVE PLASMA DEPOSITED ITO/SIO2/SI STRUCTURE International conference

Yuki Isogai*, Takefumi Kamioka, リ　ヒュンジュ, Nobuaki Kojima, Yoshio Ohshita

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

PYPVCELL - OPEN-SOURCED SOLAR CELL MODELING TOOLKIT IN PYTHON LANGUAGE International conference

リ　カンファ, Kenji Araki, Nobuaki Kojima, Masafumi Yamaguchi

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

EFFECT OF (IN)GAASN BUFFER LAYER ON DISLOCATION DENSITY FOR LATTICE-MISMATCHED HETERO-EPITAXIAL (IN)GAAS FILM International conference

オマル エルツチ, ワン　ユ チェン, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

GALLIUN ASERNIDE ON SILICON WITH A LOW-TEMPERATRE BUFFER LAYER GROWN BY MIGRATION-ENHANCED EPITAXY International conference

ワン　ユ チェン, オマル エルツチ, Akio Yamamoto*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

SINGLE DOMAIN GROWTH OF LAYERED In2Se3 ON Si(111) AS AN INTERMEDIATE BUFFER LAYER IN GaAs ON Si International conference

Nobuaki Kojima, Li Wang*, Yoshio Ohshita, Masafumi Yamaguchi

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

EFFECTS OF GE BUFFER LAYER PREPARED BY PULSE-JET EPITAXY ON CRYSTAL QUALITY OF GAAS FILM GROWN ON SI (001) SUBSTRATE International conference

Hidetoshi Suzuki, Toshihiro Yamauchi*, オマル エルツチ, ワン　ユ チェン, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 27th Photovoltaic Science and Engineering Conference (PVSEC-27)  ( Lake Biwa Otsu Prince Hotel, Otsu, Japan )   2017.11  Organizing Committee of the PVSEC-27

(Invited) Opportunities in the Single and Multi-junction Solar Cells for Increasing Power Conversion Efficiency and Annual Energy Yield Invited International conference

Kenji Araki, リ　カンファ, ワン　ユ チェン, Nobuaki Kojima, Yasuyuki Ota **, 6 Takumi Sakai **, Kensuke Nishioka **, Masafumi Yamaguchi

18th International Union of Materials Research Societies International Conference in Asia (IUMRS-ICA 2017)  ( Taipei Nangang Exhibition Hall, Taipei, Taiwan )   2017.11  MRS-Taiwan

(Invited) Si Tandem Solar Cells and Their Potential of Automobile Application Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda **, Kazutaka Kimura **, Akinori Sato **, Hiroyuki Yamada **

PV Asia Scientific Conference 2017  ( Sands Expo and Convention Centre/Marina Bay Sands, Singapore )   2017.10  The Sustainable Energy Association of Singapore (SEAS)

Novel Epitaxial GaAs Lift-Off Approach via van der Waals Interface in In2Se3 Buffer Layer International conference

Nobuaki Kojima, Li Wang*, Yoshio Ohshita, Masafumi Yamaguchi

33rd European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2017)  ( RAI Convention & Exhibition Centre, Amsterdam, The Netherlands )   2017.9  WIP

Analysis for Future Generation Solar Cells and Materials International conference

Masafumi Yamaguchi, L. Zhu*, H. Akiyama*, Y. Kanemitsu*, H. Tampo*, H. Shibata**, リ　カンファ, Kenji Araki, Nobuaki Kojima

2017 International Conference on Solid State Devices and Materials (SSDM 2017)  ( Sendai International Center, Sendai, Japan )   2017.9  The Japan Society of Applied Physics

Defects in GaAsN Buffer Layer Grown by Chemical Beam Epitaxy International conference

オマル エルツチ, ワン　ユ チェン, リ　カンファ, Mohammed Abdul Bareque*, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 15th International Conference on Advanced Materials (IUMRS-ICAM 2017)  ( Kyoto University, Yoshida Campus, Kyoto, Japan )   2017.8  MRS-J

Towards Creation of Mobility Society Using Solar Energy International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda, Kazutaka Kimura, Akinori Satou, Hiroyuki Yamada*

2017 the 5th IEEE International Conference on Smart Energy Grid Engineering (IEEE SEGE 2017)  ( University of Ontario Institute of Technology, Oshawa, Ontario, Canada )   2017.8  IEEE SEGE Organizing Committee

(Keynote) Towards Creation of Mobility Society Using Solar Energy Invited International conference

Masafumi Yamaguchi, Kenji Araki, リ　カンファ, Nobuaki Kojima, Taizo Masuda*, Kazutaka Kimura*, Akinori Satou*, Hiroyuki Yamada**

2017 the 5th IEEE International Conference on Smart Energy Grid Engineering (IEEE SEGE 2017)  ( University of Ontario Institute of Technology, Oshawa, Ontario, Canada )   2017.8  IEEE SEGE Organizing Committee

Pypvcell - “LEGO” of Solar Cell Modeling in Python Language International conference

リ　カンファ, 荒木　建次, オマル エルツチ, 小島　信晃, 山口　真史

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

原料t-C4H9GeH4のGe成膜における成膜特性 International conference

原知彦*, 片山僚太*, 小島　信晃, 大下　祥雄

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

Effect of Substrate Off-Angle on Defects in GaAsN Buffer Layer International conference

オマル エルツチ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

Molecular-beam epitaxy grown GaAs on Si substrate with a GaAs buffer layer grown by migration-enhanced epitaxy International conference

ワン　ユ チェン, Akio Yamamoto*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

反応性プラズマ蒸着プロセスの影響によるライフタイム変化 International conference

磯貝勇樹*, 神岡　武文, リ　ヒュンジュ, 小島　信晃, 大下　祥雄

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

CBE成膜GaAsNにおける原料に由来したN-H欠陥形成に関する研究 International conference

伊藤俊政*, 片山僚太*, 小島　信晃, 大下　祥雄, 山口　真史

第14回次世代の太陽光発電システムシンポジウム  ( 名古屋大学東山キャンパス　愛知県名古屋市 )   2017.7  日本学術振興会産学協力研究委員会第１７５委員会

Enhancement of Si Photovoltaic Module by Introducing III-V/Si Hybrid Configurations and Cost Evaluations under Various Cost Ratios of III-V/Si Photovoltaics International conference

ワン　ユ チェン, Kenji Araki, Kyotaro Nakamura **, リ　カンファ, Takefumi Kamioka, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

44th IEEE Photovoltaic Specialists Conference (44th IEEE PVSC)  ( Washington Marriott Wardman Park, Washington DC, USA )   2017.6  44th IEEE PVSC

Pypvcell: An Open-Source Solar Cell Modeling Library in Python International conference

リ　カンファ, Kenji Araki, オマル エルツチ, Nobuaki Kojima, Masafumi Yamaguchi

44th IEEE Photovoltaic Specialists Conference (44th IEEE PVSC)  ( Washington Marriott Wardman Park, Washington DC, USA )   2017.6  44th IEEE PVSC

Design Arithmetic of the Lateral III-V / Si Hybrid Module International conference

Kenji Araki, Kyotaro Nakamura **, ワン　ユ チェン, Nobuaki Kojima, Atsushi Ogura*, Yoshio Ohshita, Masafumi Yamaguchi

44th IEEE Photovoltaic Specialists Conference (44th IEEE PVSC)  ( Washington Marriott Wardman Park, Washington DC, USA )   2017.6  44th IEEE PVSC

Efficiency Potential of Future Generation Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Nobuaki Kojima

E-MRS 2017 Spring Meeting  ( Palais de la Musique et des Congres, Strasbourg, France )   2017.5  European Materials Research Society

Pypvcell -“LEGO”of CPV Solar Cell Modeling in Python Language International conference

リ　カンファ, Kenji Araki, オマル エルツチ, Nobuaki Kojima, Masafumi Yamaguchi

The 13th International Conference on Concentrator Photovoltaics (CPV-13)  ( University of Ottawa, Ottawa, Canada )   2017.5  CPV-13

次世代太陽電池の高効率化に関する考察 International conference

山口　真史, リ　カンファ, 荒木　建次, 小島　信晃

電子情報通信学会「電子デバイス研究会／シリコン材料・デバイス研究会共催」  ( 北海道大学　百年記念会館　北海道札幌市 )   2017.2  電子情報通信学会

Selective-area growth of GaAs on patterned Si substrates by using chemical beam epitaxy International conference

ワン　ユ チェン, Hidetoshi Suzuki, Yuki Yokoyama, Tetsuo Ikari, Atsuhiko Fukuyama*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

CREST「太陽光を利用した独創的クリーンエネルギー生成技術の創出」研究領域平成28年度第5回公開シンポジウム／豊田工業大学スマートエネルギー技術研究センター第9回シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2017.1  科学技術振興機構、豊田工業大学スマートエネルギー技術研究センター

>28% III-V/Si ハイブリッドソーラーパネル International conference

Kenji Araki, Kyotaro Nakamura, Kan-Hua Lee, Takefumi Kamioka, Shimako Naito, Motoo Morimura, Mohammad A. Bareque, Mari Aoki, Toshio Okumura, Hyunju Lee, Norihiko Maeda, Li Wang, Yutaka Hayashi, Yu-Cian Wang*, Nobuaki Kojima, Atsushi Ogura*, Yoshio Ohshita, Masafumi Yamaguchi

CREST「太陽光を利用した独創的クリーンエネルギー生成技術の創出」研究領域平成28年度第5回公開シンポジウム／豊田工業大学スマートエネルギー技術研究センター第9回シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2017.1  科学技術振興機構、豊田工業大学スマートエネルギー技術研究センター

Recombination Center in GaAsN Grown by Chemical Beam Epitaxy International conference

オマル エルツチ, Hiroyuki Kowaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

豊田工業大学スマートエネルギー技術研究センター第8回／グリーン電子素子・材料研究センター第2回合同シンポジウム  ( 豊田工業大学　愛知県名古屋市 )   2016.11  豊田工業大学

The influence of substrate orientation on strain relaxation mechanisms of InGaAs layer grown on vicinal GaAs substrates measured by in situ X-ray diffraction International conference

Hidetoshi Suzuki 宮崎大学*, Takuo Sasaki 量子科学技術研究開発機構*, Masamitu Takahasi 量子科学技術研究開発機構*, Itaru Kamiya, Yoshio Ohshita, Nobuaki Kojima, Atsuhiko Fukuyama 宮崎大学*, Tetsuo Ikari 宮崎大学*, Masafumi Yamaguchi

26th International Photovoltaic Science and Engineering Conference and Exhibition (PVSEC-26)  ( Marina Bay Sands Expo and Convention Centre (MBS) )   2016.10 

N incorporation at the surface step in CBE grown GaAsN film on GaAs(111) vicinal substrate International conference

Ryota Katayama*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 26th Photovoltaic Science and Engineering Conference (PVSEC-26)   ( Marina Bay Sands, Sands Expo and Convention Centre, Singapore )   2016.10  Solar Energy Research Institute of Singapore (SERIS)

Beyond the limit of Si solar cells – III-V on Si cell and its PCSC module concept International conference

Kenji Araki, Kyotaro Nakamura, Kan-Hua Lee, Takefumi Kamioka, Shimako Naito, Motoo Morimura, Mohammad A. Bareque, Mari Aoki, Toshio Okumura, Hyunju Lee, Norihiko Maeda, Li Wang, Yutaka Hayashi, Yu-Cian Wang*, Nobuaki Kojima, Atsushi Ogura*, Yoshio Ohshita, Masafumi Yamaguchi

The 26th Photovoltaic Science and Engineering Conference (PVSEC-26)   ( Marina Bay Sands, Sands Expo and Convention Centre, Singapore )   2016.10  Solar Energy Research Institute of Singapore (SERIS)

Selective-area growth of GaAs on patterned Si substrates by using chemical beam epitaxy International conference

ワン　ユ チェン, Hidetoshi Suzuki, Yuki Yokoyama, Tetsuo Ikari, Atsuhiko Fukuyama*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 26th Photovoltaic Science and Engineering Conference (PVSEC-26)   ( Marina Bay Sands, Sands Expo and Convention Centre, Singapore )   2016.10  Solar Energy Research Institute of Singapore (SERIS)

Study of recombination center in GaAsN grown by chemical beam epitaxy International conference

オマル エルツチ, Hiroyuki Kowaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 26th Photovoltaic Science and Engineering Conference (PVSEC-26)   ( Marina Bay Sands, Sands Expo and Convention Centre, Singapore )   2016.10  Solar Energy Research Institute of Singapore (SERIS)

Efficiency Potential of Future Generation Solar Cells International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki, Kyotaro Nakamura*, Nobuaki Kojima, Yoshio Ohshita

PRiME 2016   ( Hilton Hawaiian Village / Hawaii Convention Center, Honolulu, Hawaii, USA )   2016.10  The Electrochemical Society (ECS), The Electrochemical Society of Japan (ECSJ), and The Korean Electrochemical Society (KECS)

N–H related defect playing the role of acceptor in GaAsN grown by chemical beam epitaxy International conference

オマル エルツチ, ワン　リー, リ　カンファ, Kazuma Ikeda*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18)   ( Nagoya Congress Center, Nagoya, Japan )   2016.8  Science Council of Japan (SCJ)

Ge thin film growth on Si and SiO2 using t-C4H9GeH3 International conference

R. Katayama*, Nobuaki Kojima, K. Suda, H. Machida, M. Ishikawa, H. Sudo, A. Ogura*, Yoshio Ohshita

The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18)   ( Nagoya Congress Center, Nagoya, Japan )   2016.8  Science Council of Japan (SCJ)

Assessing material qualities and efficiency limits of III-V on silicon solar cells using external radiative efficiency International conference

リ　カンファ, Kenji Araki, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

43th IEEE Photovoltaic Specialists Conference (43rd IEEE PVSC)  ( Oregon Convention Center , Portland, OR, USA )   2016.6  43rd IEEE PVSC

Fabrication and performance analysis of a mechanical stack InGaP/GaAs//Si solar cell International conference

リ　カンファ, Kyotaro Nakamura*, Takefumi Kamioka, Nobuaki Kojima, リ　ヒュンジュ, ワン　リー, Kenji Araki, Yoshio Ohshita, Atsuhi Ogura*, Masafumi Yamaguchi

43th IEEE Photovoltaic Specialists Conference (43rd IEEE PVSC)  ( Oregon Convention Center , Portland, OR, USA )   2016.6  43rd IEEE PVSC

Acceptors related to N-H in GaAsN grown by chemical beam epitaxy International conference

オマル エルツチ, ワン　リー, リ　カンファ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第13回次世代の太陽光発電システムシンポジウム  ( アオーレ長岡　新潟県長岡市 )   2016.5  日本学術振興会産学協力研究委員会第１７５委員会

Assessing Material Qualities and Efficiency Limits of III-V on Silicon Cells Using External Radiative Efficiency International conference

リ　カンファ, Kenji Araki, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第13回次世代の太陽光発電システムシンポジウム  ( アオーレ長岡　新潟県長岡市 )   2016.5  日本学術振興会産学協力研究委員会第１７５委員会

In-diffusion of Nitrogen in GaAsN films after the soft-annealing process International conference

ワン　リー, オマル エルツチ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第13回次世代の太陽光発電システムシンポジウム  ( アオーレ長岡　新潟県長岡市 )   2016.5  日本学術振興会産学協力研究委員会第１７５委員会

Assessing Material Qualities and Efficiency Limits of III-V on Silicon Solar Cells Using Radiative Efficiency International conference

リ　カンファ, Kenji Araki, ワン　リー, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

12th International Conference on Concentrator Photovoltaics (CPV-12)  ( Historic Department Store, Freiburg, Germany )   2016.4  CPV-12

A Double acceptor in GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ワン　リー, リ　カンファ, Taketo Aihara*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

CREST「太陽光を利用した独創的クリーンエネルギー生成技術の創出」研究領域平成27年度第４回公開シンポジウム／豊田工業大学スマートエネルギー技術研究センター第７回シンポジウム  ( 豊田工業大学（愛知県名古屋市） )   2016.2  科学技術振興機構、豊田工業大学スマートエネルギー技術研究センター

A Double acceptor in GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ワン　リー, リ　カンファ, Taketo Aihara*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

CREST「太陽光を利用した独創的クリーンエネルギー生成技術の創出」研究領域平成27年度第４回公開シンポジウム／豊田工業大学スマートエネルギー技術研究センター第７回シンポジウム  ( 豊田工業大学（愛知県名古屋市） )   2016.2  科学技術振興機構、豊田工業大学スマートエネルギー技術研究センター

Criteria of 1-eV InGaAsN Solar Cell for Achieving over 45% Multi-Junction Solar Cells International conference

リ　カンファ, Kazuma Ikeda , Omar Elleuch*, ワン　リー, Kenji Araki, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

25th International Photovoltaic Science&Engineering Conference (PVSEC-25)  ( BEXCO, Busan, Korea )   2015.11  PVSEC-25 & GPVC-2015

(invited) Potential and Recent Results of High-Efficiency III-V/Si Tandem Solar Cells Invited International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki*, Nobuaki Kojima, Yoshio Ohshita

25th International Photovoltaic Science & Engineering Conference (PVSEC-25)  ( BEXCO, Busan, Korea )   2015.11  PVSEC-25 & GPVC-2015

Optical properties of layered (InxGa1-x)2Se3 buffer material deposited on GaAs(111) substrate for III-V/Silicon solar cell International conference

ワン　リー, Hiroya Nakamura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

25th International Photovoltaic Science&Engineering Conference (PVSEC-25)  ( BEXCO, Busan, Korea )   2015.11  PVSEC-25 & GPVC-2015

Study of the recombination center in GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ワン　リー, Hiroyuki Kowaki*, リ　カンファ, Kazuma Ikeda , Taketo Aihara*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

25th International Photovoltaic Science&Engineering Conference (PVSEC-25)  ( BEXCO, Busan, Korea )   2015.11  PVSEC-25 & GPVC-2015

(Invited) Potential and Activities of III-V/Si Tandem Solar Cells Invited International conference

Masafumi Yamaguchi, リ　カンファ, Kenji Araki*, Nobuaki Kojima

228th ECS Meeting  ( Phoenix Convention Center and Hyatt Regency, AZ, USA )   2015.10  ECS

(Invited) Recent Results for Concentrator Photovoltaics in Japan Invited International conference

Masafumi Yamaguchi, Tatsuya Takamoto*, Kenji Araki*, Nobuaki Kojima

2015 International Conference on Solid State Devices and Materials (SSDM 2015)  ( Sapporo Convention Center, Japan )   2015.9  The Japan Society of Applied Physics

NGCPV: A New Generation of Concentrator Photovoltaic Cells, Modules and Systems (A Final Review) International conference

A. Datas, A.B. Cristbal, G. Sala, I. Antn, J.C. Miano, P. Benitez, C. Algora, A.W. Bett, D. Lackner, M. Niemeyer, S.P. Philipps, G. Siefer, N. J. Ekins-Daukes, F. Roca, C. Cancro, I.Luque-Heredia, W. Warmuth, M. Baudrit, Y. Okada, M. Sugiyama, Y. Hishikawa, T. Takamoto*, Kenji Araki, A. Fukuyama, K. Nishioka, H. Suzuki, N. Kuze, Y. Moriyasu, T. Kita, A. Kotagiri*, Nobuaki Kojima, A. Marti*, Masafumi Yamaguchi, A. Luque*

31st European Photovoltaic Solar Energy Conference and Exhibition (EUPVSEC2015)  ( CHH Congress Centre Hamburg, Germany )   2015.9  WIP

Criteria of 1-eV InGaAsN sub-junction to achieve over 45% multi-junction solar cells International conference

リ　カンファ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

豊田工業大学スマートエネルギー技術研究センター第6回シンポジウム  ( 豊田工業大学（愛知県名古屋市） )   2015.9  豊田工業大学スマートエネルギー技術研究センター

集光太陽光発電日欧共同研究 International conference

山口　真史, 荒木建次*, 小島　信晃

半導体電力変換・モータドライブ合同研究会  ( 北海道大学札幌キャンパス )   2015.8  電気学会

Suppression of Twin Formation in Layered In2Se3 Grown on GaAs(111) International conference

Nobuaki Kojima, Hiroya Nakamura*, Yoshio Ohshita, Masafumi Yamaguchi

42th IEEE Photovoltaic Specialists Conference (PVSC42)  ( Hyatt Regency-New Orleans, USA )   2015.6  PVSC42 Organizing Committee

Prospect of InGaAsN Solar Cells Grown By Chemical Beam Epitaxy For High-Efficiency Multi-Junction Solar Cells International conference

リ　カンファ, Kazuma Ikeda , Omar Elleuch*, ワン　リー, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

42th IEEE Photovoltaic Specialists Conference (PVSC42)  ( Hyatt Regency-New Orleans, USA )   2015.6  PVSC42 Organizing Committee

Effects of Arsenic Source Molecule on N-H related Defects Formation in GaAsN Grown by Chemical Beam Epitaxy International conference

Yoshio Ohshita, Koshiro Demizu*, Omar Elleuch*, Kazuma Ikeda , Nobuaki Kojima, Hideaki Machida*, Hiroshi Sudoh*, Masafumi Yamaguchi

42th IEEE Photovoltaic Specialists Conference (PVSC42)  ( Hyatt Regency-New Orleans, USA )   2015.6  PVSC42 Organizing Committee

Structure of the Acceptor Defects in P-type GaAsN Grown by Chemical Beam Epitaxy International conference

Omar Elleuch*, ワン　リー, リ　カンファ, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

42th IEEE Photovoltaic Specialists Conference (PVSC42)  ( Hyatt Regency-New Orleans, USA )   2015.6  PVSC42 Organizing Committee

(Invited) Layered (InxGa1-x)2Se3 (III2-VI3) Compounds as Novel Buffer Layers for GaAs on Si System Invited International conference

Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The Energy, Materials, and Nanotechnology (EMN) Meeting  ( The Westin Resort & Spa, Cancun, Mexico )   2015.6 

GaAsNにおけるN-H局在振動モードの一軸圧印加による影響 International conference

池田　和磨, 坂田祐輔*, 小島　信晃, 大下　祥雄, 山口　真史

第12回次世代の太陽光発電システムシンポジウム  ( ホテル華の湯（福島県郡山市） )   2015.5  日本学術振興会　産学協力研究委員会　第175委員会

Effects of Nitrogen inhomogenous on themobility of GaAsN grown by CBE International conference

ワン　リー, Omar Elleuch*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第12回次世代の太陽光発電システムシンポジウム  ( ホテル華の湯（福島県郡山市） )   2015.5  日本学術振興会　産学協力研究委員会　第175委員会

A double acceptor in GaAsN grown bychemical beam epitaxy International conference

Omar Elleuch*, ワン　リー, リ　カンファ, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第12回次世代の太陽光発電システムシンポジウム  ( ホテル華の湯（福島県郡山市） )   2015.5  日本学術振興会　産学協力研究委員会　第175委員会

Prospect of InGaAsN Solar Cells Grown ByChemical Beam Epitaxy For High-EfficiencyMulti-Junction Solar Cells International conference

リ　カンファ, Omar Elleuch*, Kazuma Ikeda , ワン　リー, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第12回次世代の太陽光発電システムシンポジウム  ( ホテル華の湯（福島県郡山市） )   2015.5  日本学術振興会　産学協力研究委員会　第175委員会

Lattice Relaxation Mechanism of InGaAs on Vicinal GaAs Substrate International conference

Kazuma Ikeda , Hidetoshi Suzuki*, Daisuke Kodera*, Hiroya Nakamura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

7th International Symposium on Innovative Solar Cells  ( ENEOS Hall, RCAST, KomabaⅡResearch Campus, The University of Tokyo, Japan )   2015.1  University of Tokyo, AIST, Tokyo Tech.

Analysis of GaAsN Solar Cell Property for Lattice Matched 4-junction Solar Cell International conference

ワン　リー, Kazuma Ikeda , Elleuch Omar*, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

7th International Symposium on Innovative Solar Cells  ( ENEOS Hall, RCAST, KomabaⅡResearch Campus, The University of Tokyo, Japan )   2015.1  University of Tokyo, AIST, Tokyo Tech.

Light-induced defects at the interface between c-Si and SiNx deposited by PECVD International conference

Daisuke Takai*, Takuto Kojima*, Tomihisa Tachibana, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Structural characterization of MBE grown (In_xGa_1-x)₂Se₃ on GaAs(111) for GaAs on Si system International conference

Hiroya Nakamura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Polarization of N-H Bond in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Investigation on hydrogen incorporation as N-H from arsenic source in GaAsN grown by chemical beam epitaxy by using deuterated trisdimethylaminoarsenic International conference

K. Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, O. Elleuch*, H. Machida, M. Ishikawa, H. Sudoh*, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Study of the cause of high residual carriers in p-type GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ワン　リー, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Possible origin of the changes in electrical properties for post-annealed p-type CBE-GaAsN alloys International conference

ワン　リー, Omar Elleuch*, Koshiro Demizu*, Kazuma Ikeda , リ　カンファ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Strain relaxation process of lattice-mismatched InGaAs/offcut GaAs International conference

D. Kodera*, T. Nishi*, Kazuma Ikeda , T. Sasaki, M. Takahasi*, H. Suzuki*, H. Nakamura*, Yoshio Ohshita, Nobuaki Kojima, Itaru Kamiya, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2014(Top-PV2014)  ( Hotel Marix, Miyazaki, Japan )   2014.11  Uuiv. Miyazaki, TTI, Tokyo Tech, Korea Univ., KAIST

Simulated Study of GaAsN Solar Cells as Functions of the Doping Level in Front Surface Field (FSF) And Back Surface Field (BSF) Layers International conference

ワン　リー, Omar Elleuch*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Decrease of effective lifetime in Si(100) and Si(111) crystal with SiNx:H layer by light irradiation International conference

Daisuke Takai*, Takuto Kojima*, Tomihisa Tachibana, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Structural and Optical Characterization of MBE Grown (InXGa1-X)2Se3 on GaAs(111) International conference

Hiroya Nakamura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Hole Trap Acting as Acceptor in P-Type GaAsN Grown by Chemical Beam Epitaxy International conference

Omar Elleuch*, ワン　リー, リ　カンファ, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Investigation on the origin of N-H complex in GaAsN grown by chemical beam epitaxy using deuterated trisdimethylaminoarsenic International conference

K. Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, O. Elleuch*, H. Machida*, M. Ishikawa*, H. Sudoh*, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

In Situ X-Ray Diffraction Study of Strain Relaxation Process of Lattice-Mismatched InGaAs/GaAs International conference

D. Kodera*, T. Nishi*, Kazuma Ikeda , T. Sasaki, M. Takahasi*, H. Suzuki*, H. Nakamura*, Yoshio Ohshita, Nobuaki Kojima, 神谷　格, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Non-Destractive Investigatioin of Photovoltsic Performance GaAs p-n Junction Grown on Si Substract Using Surface Photo-Voltage Spectrpscopy International conference

W. Ding*, K. Kawano, H. Suzuki, A. Fukuyama, T. Ikari*, O. Morohara, H. Geka, Y. Moriyasu*, Kazuma Ikeda , Nobuaki Kojima, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Polarization of N-H Bond in Growth Process of GaAsN by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6)  ( Kyoto International Conference Center, Kyoto, Japan )   2014.11  WCPEC-6 Organizing Committee

Si基板上GaAs太陽電池への応用を目指した(InGa)₂Se₃新規バッファ層II International conference

泉龍*, 中村紘也*, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学スマートエネルギー技術研究センター第4回シンポジウム  ( 豊田工業大学 )   2014.10  豊田工業大学スマートエネルギー技術研究センター

Improvement of the electrical properties of CBE-GaAsN epitaxial layer after the post-annealing process International conference

ワン　リー, Omar Elleuch*, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

豊田工業大学スマートエネルギー技術研究センター第4回シンポジウム  ( 豊田工業大学8号棟3階大講義室 )   2014.10  豊田工業大学スマートエネルギー技術研究センター

Hole Trap Acting as Acceptor in P-type GaAsN Grown by Chemical Beam Epitaxy International conference

Omar Elleuch*, ワン　リー, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

豊田工業大学スマートエネルギー技術研究センター第4回シンポジウム  ( 豊田工業大学8号棟3階大講義室 )   2014.10  豊田工業大学スマートエネルギー技術研究センター

GaAsN中のN-H複合欠陥の熱処理に伴う濃度変化 International conference

出水孝志郎*, 池田　和磨, ワン　リー, Omar Elleuch*, 小島　信晃, 大下　祥雄, 山口　真史

2014年第75回応用物理学会秋季学術講演会  ( 北海道大学札幌キャンパス )   2014.9  公益社団法人　応用物理学会

化学ビームエピタキシー法により成長したGaAsN における N-H 結合の偏向特性の起源 International conference

池田　和磨, 出水孝志郎*, 小島　信晃, 大下　祥雄, 山口　真史

2014年第75回応用物理学会秋季学術講演会  ( 北海道大学札幌キャンパス )   2014.9  公益社団法人　応用物理学会

GaAs 基板の傾斜方向が InGaAs 膜中緩和過程に与える影響 -X線回折その場観察- International conference

小寺大介*, 佐々木拓生*, 高橋正光*, 鈴木秀俊*, 小島　信晃, 大下　祥雄, 神谷　格, 山口　真史

2014年第75回応用物理学会秋季学術講演会  ( 北海道大学札幌キャンパス )   2014.9  公益社団法人　応用物理学会

Simulation Analysis of The Potential Causes for The Low Jsc in GaAsN Solar Cells International conference

ワン　リー, Omar Elleuch*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

International Conference on Solid State Devices and Materials (SSDM2014)  ( Tsukuba International Congress Center, Japan )   2014.9 

Hole Trap Associated with High Background Doping in P-type GaAsN Grown by Chemical Beam Epitaxy International conference

Omar Elleuch*, ワン　リー, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

International Conference on Solid State Devices and Materials (SSDM2014)  ( Tsukuba International Congress Center, Japan )   2014.9 

In situ X-ray diffraction study of strain relaxation process of lattice-mismatched InGaAs/GaAs International conference

Daisuke Kodera*, Toshiaki Nishi*, Kazuma Ikeda , Takuo Sasaki, Masamitu Takahasi*, Hidetoshi Suzuki*, Hiroya Nakamura*, Yoshio Ohshita, Nobuaki Kojima, Itaru Kamiya, Masafumi Yamaguchi

The 15th International Union of Materials Research Societies (IUMRS)-International Conference in Asia (IUMRS-ICA 2014)  ( Fukuoka University, Japan )   2014.8  MRS-J in collaboration with The Japan Society of Applied Physics (JSAP) Kyushu Chapter

In situ X-ray diffraction study of strain relaxation process of lattice-mismatched InGaAs/GaAs International conference

Daisuke Kodera*, Toshiaki Nishi*, Kazuma Ikeda , Takuo Sasaki, Masamitu Takahasi*, Hidetoshi Suzuki*, Hiroya Nakamura*, Yoshio Ohshita, Nobuaki Kojima, Itaru Kamiya, Masafumi Yamaguchi

The 15th International Union of Materials Research Societies (IUMRS)-International Conference in Asia (IUMRS-ICA 2014)  ( Fukuoka University, Japan )   2014.8  MRS-J in collaboration with The Japan Society of Applied Physics (JSAP) Kyushu Chapter

CBE-Grown GaAsN Solar Cells for Multijunction Solar Cell Applications International conference

Masafumi Yamaguchi, Kazuma Ikeda , Boussairi Bouzazi*, Nobuaki Kojima, Yoshio Ohshita

The International Workshop on Nitride Semiconductors 2014 (IWN2014)  ( Instytut Automatyki Systemów Energetycznych Sp. z o.o., Wroclwa, Poland )   2014.8 

Annealing Effects on Recombination Activity at Σ3n Grain Boundaries International conference

Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

24th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes  ( Beaver Run Resort, Breckenridge, CO, USA )   2014.7  National Renewable Energy Laboratory (NREL)

結晶成長その場X線回折装置（MBE-XRD）によるInGaAs/GaAs(001)の緩和研究 International conference

小寺大介*, 佐々木拓生*, 西俊明*, 鈴木秀俊*, 小島　信晃, 大下　祥雄, 山口　真史

第11回次世代の太陽光発電システムシンポジウム  ( 宮崎観光ホテル )   2014.7  日本学術振興会　産学協力研究委員会　第175委員会

GaAsN中のN-H複合欠陥の取り込み過程 International conference

出水孝志郎*, 池田　和磨, 小島　信晃, 須藤弘 気相成長株式会社*, 石川真人 気相成長株式会社*, 町田英明 気相成長株式会社*, 大下　祥雄, 山口　真史

第11回次世代の太陽光発電システムシンポジウム  ( 宮崎観光ホテル )   2014.7  日本学術振興会　産学協力研究委員会　第175委員会

化学ビームエピタキシー法により成長した p-GaAsN における複合準位のホール捕獲特性 International conference

池田　和磨, Omar Elleuch*, 小島　信晃, 大下　祥雄, 山口　真史

第11回次世代の太陽光発電システムシンポジウム  ( 宮崎観光ホテル )   2014.7  日本学術振興会　産学協力研究委員会　第175委員会

GaAs(111)基板上に成膜した(In_xGa_1-x)₂Se₃薄膜の構造評価 International conference

中村紘也*, 小島　信晃, 大下　祥雄, 山口　真史

第11回次世代の太陽光発電システムシンポジウム  ( 宮崎観光ホテル )   2014.7  日本学術振興会　産学協力研究委員会　第175委員会

Light-induced defects at the interface between c-Si and SiNx deposited by PECVD International conference

Daisuke Takai*, Takuto Kojima*, Tomihisa Tachibana, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

12th International Workshop on Beam Injection Assessment of Microstructures in Semiconductors (BIAMS12)  ( National Institute for Materials Science (NIMS), Tsukuba, Japan )   2014.6  BIAMS12 Scientific Committee

Annealing Effect on Recombination Velocity at Grain Boundaries in Multicrystalline Silicon International conference

Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

12th International Workshop on Beam Injection Assessment of Microstructures in Semiconductors (BIAMS12)  ( National Institute for Materials Science (NIMS), Tsukuba, Japan )   2014.6  BIAMS12 Scientific Committee

Growth of Layered (In_xGa_1-x) ₂Se₃ Buffer Material for GaAs on Si System International conference

Nobuaki Kojima, Hiroya Nakamura*, Yoshio Ohshita, Masafumi Yamaguchi

40th IEEE Photovoltaic Specialists Conference (PVSC40)  ( Colorado Convention Center, Denver, USA )   2014.6  PVSC40 Organizing Committee

Properties of N-H Local Vibration Modes in GaAsN GroGwn by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Yamakata Akira, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

40th IEEE Photovoltaic Specialists Conference (PVSC40)  ( Colorado Convention Center, Denver, USA )   2014.6  PVSC40 Organizing Committee

Nonradiative recombination centers in GaAsN Grown by Chemical Beam Epitaxy International conference

Boussairi Bouzazi*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

40th IEEE Photovoltaic Specialists Conference (PVSC40)  ( Colorado Convention Center, Denver, USA )   2014.6  PVSC40 Organizing Committee

Defect Management of High Efficiency Multijunction, Space and Concentrator Solar Cells(Invited) Invited International conference

Masafumi Yamaguchi, Nobuaki Kojima

2014 MRS Spring Meeting & Exhibit  ( The Westin San Francisco Market Street, San Francisco, USA )   2014.4  Materials Research Society

Recombination center in p-GaAsN grown by chemical beam epitaxy International conference

Hiroyuki Kowaki*, Omar Elleuch*, Kazuma Ikeda , ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第61回応用物理学会春季学術講演会（2014春季）  ( 青山学院大学相模原キャンパス )   2014.3  公益社団法人　応用物理学会

Study of high background doping in p-type GaAsN grown by chemical beam epitaxy International conference

Omar　Elleuch*, Hiroyuki Kowaki*, ブザイリ ブザジ, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第61回応用物理学会春季学術講演会（2014春季）  ( 青山学院大学相模原キャンパス )   2014.3  公益社団法人　応用物理学会

多結晶シリコン結晶粒界における不純物分布と再結合活性に対する界面構造の影響 International conference

小島拓人*, 立花　福久, 小島　信晃, 大下　祥雄, 新船幸二*, 小椋厚志*, 山口　真史

第61回応用物理学会春季学術講演会（2014春季）  ( 青山学院大学相模原キャンパス )   2014.3  公益社団法人　応用物理学会

Real-time observation of crystallographic tilting in InGaAs layers on GaAs offcut substrates International conference

Kazuma Ikeda , Toshiaki Nishi*, Takuo Sasaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

6th International symposium on Innovative Solar Cells  ( Tokyo Institute of Technology, Japan )   2014.1  Tokyo tech, Univ. Tokyo, and AIST

Effect of Energy Levels on the performances of GaAsN Solar cell grown by Chemical Beam Epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

6th International symposium on Innovative Solar Cells  ( Tokyo Institute of Technology, Japan )   2014.1  Tokyo tech, Univ. Tokyo, and AIST

III-V Lattice-Mismatched and III-V-N Materials for Super High Efficiency Multi-Junction Solar Cells International conference

Kazuma Ikeda , Masafumi Yamaguchi, ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita

2013 MRS Fall Meeting & Exhibit  ( Hynes Convention Center, Sheraton Boston Hotel, USA )   2013.12  Materials Research Society

GaAs オフカット基板上におけるInGaAs 層の結晶面傾斜のリアルタイム観測 International conference

西俊明*, 池田　和磨, 鈴木秀俊*, 佐々木拓生*, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学局所構造制御研究センター最終年度シンポジウム  ( 豊田工業大学（名古屋） )   2013.11  豊田工業大学局所構造制御研究センター

多結晶シリコン中の不純物分布とキャリア再結合に対する粒界構造と熱処理の影 International conference

小島拓人*, 立花　福久, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学局所構造制御研究センター最終年度シンポジウム  ( 豊田工業大学（名古屋） )   2013.11  豊田工業大学局所構造制御研究センター

CBE 法で作製したGaAsN 中の正孔捕獲準位を介した再結合過程の解析 International conference

幸脇広幸*, ブザイリ ブザジ, 池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学局所構造制御研究センター最終年度シンポジウム  ( 豊田工業大学（名古屋） )   2013.11  豊田工業大学局所構造制御研究センター

Effect of annealing on ionized acceptors density and acceptor states in p-type GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ブザイリ ブザジ, Hiroyuki Kowaki*, Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

豊田工業大学局所構造制御研究センター最終年度シンポジウム  ( 豊田工業大学（名古屋） )   2013.11  豊田工業大学局所構造制御研究センター

Analysis and improvement of the Performances of Chemical Beam Epitaxy Grown GaAsN Solar Cells International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.11  PVSEC-23 Organizing Committee

Anisotropic relaxation in lattice mismatched InAlGaAs/GaAs International conference

Daisuke Kodera*, Takuo Sasaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Effect of annealing on ionized acceptors density in p-type GaAsN grown by chemical beam epitaxy International conference

Omar Elleuch*, ブザイリ ブザジ, Hiroyuki Kowaki*, Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Analysis of recombination process via hole trap in GaAsN grown by Chemical Beam Epitaxy International conference

Hiroyuki Kowaki*, ブザイリ ブザジ, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Defect level of N-H complex in GaAsN grown by chemical beam epitaxy International conference

Koshiro Demizu*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Structure of N-H complex in GaAsN(001) Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Koshiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Real-time observation of crystallographic tilting in InGaAs layers on GaAs offcut substrates International conference

Toshiaki Nishi*, Kazuma Ikeda , Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Structural characterization of novel buffer material (In_xGa_1-x)₂Se₃ for GaAs on Si system International conference

Hiroya Nakamura*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Difference of Surface Recombination Velocity of SiNx:H/c-Si(100)Interface with Light Irradiation at Different Temperature International conference

Daisuke Takai*, Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23)  ( Taipei International Convention Center, Taipei, Taiwan )   2013.10  PVSEC-23 Organizing Committee

Impurities distribution and recombination activity in as-grown and annealed multicrystalline silicon International conference

Takuto Kojima*, Tomihisa Tachibana, Nobuaki Kojima, Yoshio Ohshita, Koji Arafune*

2013 International Conference on Solid State Devices and Materials (SSDM2013)  ( Hilton Fukuoka Sea Hawk, Fukuoka, Japan )   2013.9  SSDM2013 Organizing Committee

Effect of Surface Morphology on the Density of Energy States in GaAsN grown by Chemical Beam Epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 International Conference on Solid State Devices and Materials (SSDM2013)  ( Hilton Fukuoka Sea Hawk, Fukuoka, Japan )   2013.9  SSDM2013 Organizing Committee

Preferential N-H Bond Direction in GaAsN(001) Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Koushiro Demizu*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 International Conference on Solid State Devices and Materials (SSDM2013)  ( Hilton Fukuoka Sea Hawk, Fukuoka, Japan )   2013.9  SSDM2013 Organizing Committee

Relationship between ionized acceptors density and hole traps in p-type GaAsN grown by chemical beam epitaxy International conference

Elleuch Omar*, ブザイリ ブザジ, 幸脇広幸*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第74回応用物理学会秋季学術講演会（2013秋季）  ( 同志社大学京田辺キャンパス )   2013.9  公益社団法人　応用物理学会

CBE法で作製したGaAsN中の正孔捕獲準位を介した再結合過程の解析 International conference

幸脇広幸*, ブザイリ ブザジ, 池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

第74回応用物理学会秋季学術講演会（2013秋季）  ( 同志社大学京田辺キャンパス )   2013.9  公益社団法人　応用物理学会

Relationship between ionized acceptors density and hole traps in p-type GaAsN grown by chemical beam epitaxy International conference

Elleuch Omar*, ブザイリ ブザジ, 幸脇広幸*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第74回応用物理学会秋季学術講演会（2013秋季）  ( 同志社大学京田辺キャンパス )   2013.9  公益社団法人　応用物理学会

Relation between Increase of Surface Recombination Velocity by Light Irradiation and Dangling Bonds International conference

Daisuke Takai*, Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 JSAP-MRS Joint Symposia  ( Kyotanabe Campus, Doshisha University, Kyoto, Japan )   2013.9  The Japan Society of Applied Physics

Bond orientation of N-H Complex in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 JSAP-MRS Joint Symposia  ( Kyotanabe Campus, Doshisha University, Kyoto, Japan )   2013.9  The Japan Society of Applied Physics

Bond orientation of N-H Complex in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 JSAP-MRS Joint Symposia  ( Kyotanabe Campus, Doshisha University, Kyoto, Japan )   2013.9  The Japan Society of Applied Physics

Wagging modes and stretch modes in GaAsN grown by chemical beam epitaxy International conference

Koshiro Demizu*, Kazuma Ikeda , Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2013 JSAP-MRS Joint Symposia  ( Kyotanabe Campus, Doshisha University, Kyoto, Japan )   2013.9  The Japan Society of Applied Physics

III-V-N Materials for Super High Efficiency Multi-Junction Solar Cells International conference

Kazuma Ikeda , Masafumi Yamaguchi, ブザイリ ブザジ, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita

10th International Conference on Nitride Semiconductors（ICNS-10)  ( Gaylord National Hotel and Convention Center, WashingtonDC, USA )   2013.8  Materials Research Society

超高効率多接合太陽電池の実現に向けたGaAsN太陽電池の高効率化 International conference

池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

電子情報通信学会　電子部品・材料研究会（CPM）  ( 釧路生涯学習センターまなぼっと幣舞 )   2013.8  電子情報通信学会

格子整合型太陽電池の新材料：(In)GaAsN中の欠陥評価 International conference

出水孝志郎*, 池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学スマートエネルギー技術研究センター第２回シンポジウム  ( 豊田工業大学 )   2013.7  豊田工業大学スマートエネルギー技術研究センター

格子不整合AlInGaAs/GaAsの歪緩和の面内異方性 International conference

小寺大介*, 佐々木拓生*, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学スマートエネルギー技術研究センター第２回シンポジウム  ( 豊田工業大学 )   2013.7  豊田工業大学スマートエネルギー技術研究センター

アモルファス水素化窒化シリコン膜/結晶シリコン界面の表面再結合速度評価 International conference

高井大輔*, 小島拓人*, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学スマートエネルギー技術研究センター第２回シンポジウム  ( 豊田工業大学 )   2013.7  豊田工業大学スマートエネルギー技術研究センター

Si基板上GaAs太陽電池への応用を目指した(InGa)₂Se₃新規バッファ層 International conference

中村紘也*, 小島　信晃, 大下　祥雄, 山口　真史

豊田工業大学スマートエネルギー技術研究センター第２回シンポジウム  ( 豊田工業大学 )   2013.7  豊田工業大学スマートエネルギー技術研究センター

Preferential N-H Bond Orientation in GaAsN　Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

39th IEEE Photovoltaic Specialists Conference (PVSC39)  ( Tampa Convention Center, Florida, USA )   2013.6  PVSC39 Organizing Committee

Arsenic Source Flow Rate Dependence of Minority Carrier Lifetime in GaAsN grown by Chemical Beam Epitaxy International conference

ブザイリ ブザジ, Maki Aisaka*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

39th IEEE Photovoltaic Specialists Conference (PVSC39)  ( Tampa Convention Center, Florida, USA )   2013.6  PVSC39 Organizing Committee

GaAs/Si用新規バッファ層への応用を目指した(In_xGa_1-x)₂Se₃のGaAs(111)面上MBE成長 International conference

中村紘也*, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

多結晶シリコン中の不純物分布とキャリア再結合に対する熱処理の影響 International conference

小島拓人*, 立花　福久, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

表面再結合速度の光照射時間依存性と暗状態放置による劣化 International conference

高井大輔*, 小島拓人*, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

Modeling of the improvement of the external quantum efficiency in GaAsN solar cell grown by chemical beam epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

GaAsN太陽電池材料におけるN-H複合欠陥の配向特性 International conference

池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

化学ビームエピタキシー法で作製したGaAsN中の再結合中心の解析 International conference

幸脇広幸*, ブザイリ ブザジ, 池田　和磨, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

格子不整合AlInGaAs/GaAs歪緩和の面内異方性 International conference

小寺大介*, 佐々木拓生*, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

GaAsN中の同一N-H複合欠陥起因の変角・伸縮振動モード International conference

出水孝志郎*, 池田　和磨, 稲垣充*, 小島　信晃, 大下　祥雄, 山口　真史

第10回次世代の太陽光発電システムシンポジウム  ( 石川県立音楽堂 )   2013.5  日本学術振興会　産学協力研究委員会　第175委員会

Defect characterization in compositionally graded InGaAs layers on GaAs (001) grown by MBE International conference

Takuo Sasaki*, Andrew G Norman*, Manuel J Romero*, Mowafak M Al-Jassim*, Masamitu Takahasi*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Compound Semiconductor Week 2013 (ISCS & IPRM)  ( Kobe Convention Center, Kobe, Japan )   2013.5  ISCS2013 & IPRM2013 Organizing Committee

Optical DLTS for the Study of deep-level defects in GaAsN Grown by Chemical Beam Epitaxy International conference

Hiroyuki Kowaki*, Kan Hua Lee*, Takuto Kojima*, Makoto Inagaki*, Kazuma Ikeda , ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, N J Ekins-Daukes*

The 40th International Symposium on Compound Semiconductors (ISCS2013)  ( Kobe Convention Center, Kobe, Japan )   2013.5  ISCS2013 & IPRM2013 Organizing Committee

Effect of Arsenic source Flow Rate on Lattice Defects in GaAsN Grown by Chemical Beam Epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 40th International Symposium on Compound Semiconductors (ISCS2013)  ( Kobe Convention Center, Kobe, Japan )   2013.5  ISCS2013 & IPRM2013 Organizing Committee

Preferential N-H Bond Direction in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 40th International Symposium on Compound Semiconductors (ISCS2013)  ( Kobe Convention Center, Kobe, Japan )   2013.5  ISCS2013 & IPRM2013 Organizing Committee

Analysis of Defects in GaAsN Grown by Chemical Beam Epitaxy on High Index GaAs Substrates International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

Characteristics of GaAsN Solar Cell Fabricated by Chemical Beam Epitaxy International conference

M. Inagaki*, ブザイリ ブザジ, K. Demizu*, O. Elleuch*, Kazuma Ikeda , Nobuaki Kojima, T. Kojima*, Yoshio Ohshita, H. Kowaki*, Masafumi Yamaguchi

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

Real-time Observation of Crystallographic Tilting in InGaAs Layers on GaAs Offcut Substrates International conference

Nishi Toshiaki*, Takuo Sasaki*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

Optical DLTS for the Study of Recombination Centers in GaAsN Grown by　Chemical Beam Epitaxy International conference

H. Kowaki*, ブザイリ ブザジ, N. Ekin-Daukes*, Kazuma Ikeda , M. Inagaki*, T. Kojima*, Nobuaki Kojima, K. Lee*, Yoshio Ohshita, Masafumi Yamaguchi

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

Ga₂Se₃ and (InGa)₂Se₃ as Novel Buffer Layers in the GaAs on Si System International conference

Nobuaki Kojima, C. Morales*, Yoshio Ohshita, Masafumi Yamaguchi

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

N-H Peak Shift in GaAsN by Band Gap Exitation International conference

Kazuma Ikeda , M. Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, Yamakata Akira

9th International Conference on Concentrator Photovoltaic Systems (CPV-9)  ( Phoenix Seagaia Resort, Miyazaki, Japan )   2013.4  CPV-9 Organizing Committee

透過型電子顕微鏡を用いた傾斜組成InGaAs層の欠陥評価 International conference

佐々木拓生, 西　俊明*, 高橋正光*, 小島　信晃, 大下　祥雄, 山口　真史

第60回応用物理学会春季学術講演会（2013春季）  ( 神奈川工科大学 )   2013.3  公益社団法人　応用物理学会

GaAsN solar cell grown by chemical beam epitaxy International conference

Kazuma Ikeda , Makoto Inagaki*, ブザイリ ブザジ, Hiroyuki Kowaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

5th International Symposium on Innovative Solar Cells  ( EPOCHAL TSUKUBA, Japan )   2013.1  AIST, RCAST, Tokyo-Tech

Defect analyses in lattice-mismatched III-V materials for high-efficient solar cell application International conference

Takuo Sasaki, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

5th International Symposium on Innovative Solar Cells  ( EPOCHAL TSUKUBA, Japan )   2013.1  AIST, RCAST, Tokyo-Tech

Defect analyses in lattice-mismatched III-V materials for high-efficient solar cell application International conference

Takuo Sasaki, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

5th International Symposium on Innovative Solar Cells  ( EPOCHAL TSUKUBA, Japan )   2013.1  AIST, RCAST, Tokyo-Tech

Contribution of As source gas to N-H defect formation in GaAsN grown by chemical beam epitaxy International conference

Kazuma Ikeda , Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 22nd Photovoltaic Science and Engineering Conference (PVSEC-22)  ( The Dragon Hotel, Hangzhou, China )   2012.11  China Renewable Energy Society, Zhejiang University

Dominance of multi−phonon emission in the electron−capture cross section of gap states in GaAsN grown by chemical beam epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

The 22nd Photovoltaic Science and Engineering Conference (PVSEC-22)  ( The Dragon Hotel, Hangzhou, China )   2012.11  China Renewable Energy Society, Zhejiang University

III-VI compounds as novel buffer layer structure in the GaAs on Si system International conference

クリソフォロ　モラーレス, Nobuaki Kojima, Masafumi Yamaguchi, Yoshio Ohshita

The 22nd Photovoltaic Science and Engineering Conference (PVSEC-22)  ( The Dragon Hotel, Hangzhou, China )   2012.11  China Renewable Energy Society, Zhejiang University

High sheet resistance emitter for improved efficiency by wet etching processes International conference

M. Aoki*, Yoshio Ohshita, T. Kojima*, Nobuaki Kojima, A. Harada*, T. Tachibana*, A. Ogura*, Y. Kawata*, H. Sato*, Y. Kumagai*

The 22nd Photovoltaic Science and Engineering Conference (PVSEC-22)  ( The Dragon Hotel, Hangzhou, China )   2012.11  China Renewable Energy Society, Zhejiang University

III-V-N Materials for Super High Efficiency Multijunction Solar Cells International conference

Masafumi Yamaguchi, ブザイリ ブザジ, Hidetoshi Suzuki*, Nobuaki Kojima, Yoshio Ohshita

International Workshop on Nitride Semiconductors 2012 (IWN2012)  ( Sapporo Convention Center, Sapporo, Japan )   2012.10  The Japan Society of Applied Physics

N-H Defect Formation Mechanism in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Suguru Wada*, Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2012 International Conference on Solid State Devices and Materials (SSDM2012)  ( Kyoto International Conference Center, Kyoto, Japan )   2012.9  The Japan Society of Applied Physics

Defects in Electron-Irradiated and Hydrogenated GaAsN Grown by Chemical Beam Epitaxy International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

2012 International Conference on Solid State Devices and Materials (SSDM2012)  ( Kyoto International Conference Center, Kyoto, Japan )   2012.9  The Japan Society of Applied Physics

SiNx:H膜のp型単結晶シリコンに対するパッシベーション性能への高速熱処理の影響 International conference

小島拓人*, 小田裕貴*, 高井大輔*, 小島　信晃, 大下　祥雄, 山口　真史

第73回応用物理学会学術講演会（2012秋季）  ( 愛媛大学城北地区、松山大学文京キャンパス )   2012.9  公益社団法人　応用物理学会

GaAsN中のN-H欠陥形成に対する各原料の寄与 International conference

池田　和磨, 和田卓*, 稲垣充*, 小島　信晃, 大下　祥雄, 山口　真史

第73回応用物理学会学術講演会（2012秋季）  ( 愛媛大学城北地区、松山大学文京キャンパス )   2012.9  公益社団法人　応用物理学会

Study of Strain Relaxation Processes in Lattice-Mismatched InGaAs by X-ray Reciprocal Space Mapping International conference

Toshiaki Nishi*, Takuo Sasaki, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Energy States in Chemical Beam Epitaxy grown GaAsN: What We’ve Learned So Far International conference

ブザイリ ブザジ, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Distribution of N-H Bond Direction in GaAsN Grown by Chemical Beam Epitaxy International conference

Kazuma Ikeda , Makoto Inagaki*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Annealing Effects on Recombination Centers in GaAsN International conference

Hiroyuki Kowaki*, Makoto Inagaki*, Kazuma Ikeda , Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Ga₂Se₃ and (InGa)₂Se₃ as Lattice Mismatch/Thermal Expansion Mismatch Buffer Layers in the GaAs on Si System International conference

クリソフォロ　モラーレス, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Annealing Effects on Ni and Cu at (110)/ (100) DSB Interface International conference

Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi

Korea-Japan Top University League Workshop on Photovoltaics 2012(Top-PV2012)  ( Korea University, Seoul, Korea )   2012.8  Korea University, KAIST, Tokyo Tech, TTI

Electron Beam Induced Current Analysis of Recombination Velocity at Grain Boundaries in Multicrystalline Silicon International conference

Takuto Kojima*, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi