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Characterization and modeling of radiation damages via internal radiative efficiency in multi-junction solar cells

  • Lin Zhu
  • , Masahiro Yoshita
  • , Tetsuya Nakamura
  • , Mitsuru Imaizumi
  • , Changsu Kim
  • , Toshimitsu Mochizuki
  • , Shaoqiang Chen
  • , Yoshihiko Kanemitsu
  • , Hidefumi Akiyama
  • The University of Tokyo
  • Japan Aerospace Exploration Agency
  • National Institute of Advanced Industrial Science and Technology
  • Kyoto University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In order to understand the radiation effects in space-used multi-junction solar cells, we characterized degradations of internal radiative efficiency (ηinti) in respective subcells in InGaP/GaAs double-junction solar cells after 1-MeV electron irradiations with different electrons fluences (Φ) via absolute electroluminescence (EL) measurements, because ηinti purely represents material-quality change due to radiation damage, independently from cell structures. We analyzed the degradation of ηinti under different Φ and found that the data of ηinti versus Φ in moderate and high Φ regions are very similar and almost independent of subcell materials, while the difference in beginning-of-life qualities of InGaP and GaAs materials causes dominant difference in sub-cell sensitivity to the low radiation damages. Finally, a simple model was proposed to explain the mechanism in degradation of ηinti, and also well explained the degradation behavior in open-circuit voltage for these multi-junction solar cells.

源语言英语
主期刊名Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V
编辑Masakazu Sugiyama, Alexandre Freundlich, Laurent Lombez
出版商SPIE
ISBN(电子版)9781628419788
DOI
出版状态已出版 - 2016
活动Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V - San Francisco, 美国
期限: 15 2月 201617 2月 2016

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
9743
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V
国家/地区美国
San Francisco
时期15/02/1617/02/16

联合国可持续发展目标

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  1. 可持续发展目标 7 - 经济适用的清洁能源
    可持续发展目标 7 经济适用的清洁能源

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