中国物理B ›› 2016, Vol. 25 ›› Issue (10): 108801-108801.doi: 10.1088/1674-1056/25/10/108801

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Comparision between Ga- and N-polarity InGaN solar cells with gradient-In-composition intrinsic layers

Lin Lu(鲁麟), Ming-Chao Li(李明潮), Chen Lv(吕琛), Wen-Gen Gao(高文根), Ming Jiang(江明), Fu-Jun Xu(许福军), Qi-Gong Chen(陈其工)   

  1. 1 Anhui Key Laboratory of Detection Technology and Energy Saving Devices, Anhui Polytechnic University, Wuhu 241000, China;
    2 College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China;
    3 Research Center for Wide Gap Semiconductor, School of Physics, Peking University, Beijing 100871, China
  • 收稿日期:2016-04-12 修回日期:2016-06-13 出版日期:2016-10-05 发布日期:2016-10-05
  • 通讯作者: Lin Lu E-mail:LLu-wh@qq.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61306108, 61172131, and 61271377), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (Grant No. 2013693), and the Anhui Polytechnic University Funds for Excellent Young Scientists, China (Grant No. 2014YQQ005).

Comparision between Ga- and N-polarity InGaN solar cells with gradient-In-composition intrinsic layers

Lin Lu(鲁麟)1,2, Ming-Chao Li(李明潮)1,2, Chen Lv(吕琛)2, Wen-Gen Gao(高文根)1,2, Ming Jiang(江明)1,2, Fu-Jun Xu(许福军)3, Qi-Gong Chen(陈其工)1,2   

  1. 1 Anhui Key Laboratory of Detection Technology and Energy Saving Devices, Anhui Polytechnic University, Wuhu 241000, China;
    2 College of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China;
    3 Research Center for Wide Gap Semiconductor, School of Physics, Peking University, Beijing 100871, China
  • Received:2016-04-12 Revised:2016-06-13 Online:2016-10-05 Published:2016-10-05
  • Contact: Lin Lu E-mail:LLu-wh@qq.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61306108, 61172131, and 61271377), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China (Grant No. 2013693), and the Anhui Polytechnic University Funds for Excellent Young Scientists, China (Grant No. 2014YQQ005).

摘要: Performances of Ga- and N-polarity solar cells (SCs) adopting gradient-In-composition intrinsic layer (IL) are compared. It is found the gradient ILs can greatly weaken the negative influence from the polarization effects for the Ga- polarity case, and the highest conversion efficiency (η) of 2.18% can be obtained in the structure with a linear increase of In composition in the IL from bottom to top. This is mainly attributed to the adsorptions of more photons caused by the higher In composition in the IL closer to the p-GaN window layer. In contrast, for the N-polarity case, the SC structure with an InGaN IL adopting fixed In composition prevails over the ones adopting the gradient-In-composition IL, where the highest η of 9.28% can be obtained at x of 0.62. N-polarity SC structures are proven to have greater potential preparations in high-efficient InGaN SCs.

关键词: InGaN, solar cell, polarity

Abstract: Performances of Ga- and N-polarity solar cells (SCs) adopting gradient-In-composition intrinsic layer (IL) are compared. It is found the gradient ILs can greatly weaken the negative influence from the polarization effects for the Ga- polarity case, and the highest conversion efficiency (η) of 2.18% can be obtained in the structure with a linear increase of In composition in the IL from bottom to top. This is mainly attributed to the adsorptions of more photons caused by the higher In composition in the IL closer to the p-GaN window layer. In contrast, for the N-polarity case, the SC structure with an InGaN IL adopting fixed In composition prevails over the ones adopting the gradient-In-composition IL, where the highest η of 9.28% can be obtained at x of 0.62. N-polarity SC structures are proven to have greater potential preparations in high-efficient InGaN SCs.

Key words: InGaN, solar cell, polarity

中图分类号:  (Efficiency and performance of solar cells)

  • 88.40.hj
81.05.Ea (III-V semiconductors) 88.40.jm (Thin film III-V and II-VI based solar cells) 84.60.Jt (Photoelectric conversion)