中国物理B ›› 2018, Vol. 27 ›› Issue (3): 38502-038502.doi: 10.1088/1674-1056/27/3/038502

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

Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost

Haibin Huang(黄海宾), Gangyu Tian(田罡煜), Lang Zhou(周浪), Jiren Yuan(袁吉仁), Wolfgang R. Fahrner, Wenbin Zhang(张闻斌), Xingbing Li(李杏兵), Wenhao Chen(陈文浩), Renzhong Liu(刘仁中)   

  1. 1 Institute of Photovoltaics, Nanchang University, Nanchang 330031, China;
    2 Department of Physics, Nanchang University, Nanchang 330031, China;
    3 GCL System Integration Technology Co. Ltd., Shanghai 201700, China;
    4 Hareon Solar Co. Ltd., Taicang 215400, China
  • 收稿日期:2017-12-06 修回日期:2017-12-25 出版日期:2018-03-05 发布日期:2018-03-05
  • 通讯作者: Lang Zhou, Jiren Yuan E-mail:lzhou@ncu.edu.cn;yuanjiren@ncu.edu.cn
  • 基金资助:

    Project supported by the Jiangxi Provincial Key Research and Development Foundation, China (Grant No. 2016BBH80043), the Open Fund of Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, China (Grant No. NJ20160032), and the National Natural Science Foundation of China (Grant Nos. 61741404, 61464007, and 51561022).

Simulation and experimental study of a novel bifacial structure of silicon heterojunction solar cell for high efficiency and low cost

Haibin Huang(黄海宾)1, Gangyu Tian(田罡煜)1, Lang Zhou(周浪)1, Jiren Yuan(袁吉仁)1,2, Wolfgang R. Fahrner1, Wenbin Zhang(张闻斌)3, Xingbing Li(李杏兵)3, Wenhao Chen(陈文浩)4, Renzhong Liu(刘仁中)4   

  1. 1 Institute of Photovoltaics, Nanchang University, Nanchang 330031, China;
    2 Department of Physics, Nanchang University, Nanchang 330031, China;
    3 GCL System Integration Technology Co. Ltd., Shanghai 201700, China;
    4 Hareon Solar Co. Ltd., Taicang 215400, China
  • Received:2017-12-06 Revised:2017-12-25 Online:2018-03-05 Published:2018-03-05
  • Contact: Lang Zhou, Jiren Yuan E-mail:lzhou@ncu.edu.cn;yuanjiren@ncu.edu.cn
  • Supported by:

    Project supported by the Jiangxi Provincial Key Research and Development Foundation, China (Grant No. 2016BBH80043), the Open Fund of Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, China (Grant No. NJ20160032), and the National Natural Science Foundation of China (Grant Nos. 61741404, 61464007, and 51561022).

摘要:

A novel structure of Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si:H/p+-a-Si:H/TCO/Ag grid was designed to increase the efficiency of bifacial amorphous/crystalline silicon-based solar cells and reduce the rear material consumption and production cost. The simulation results show that the new structure obtains higher efficiency compared with the typical bifacial amorphous/crystalline silicon-based solar cell because of an increase in the short-circuit current (Jsc), while retaining the advantages of a high open-circuit voltage, low temperature coefficient, and good weak-light performance. Moreover, real cells composed of the novel structure with dimensions of 75 mm×75 mm were fabricated by a special fabrication recipe based on industrial processes. Without parameter optimization, the cell efficiency reached 21.1% with the Jsc of 41.7 mA/cm2. In addition, the novel structure attained 28.55% potential conversion efficiency under an illumination of AM 1.5 G, 100 mW/cm2. We conclude that the configuration of the Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si:H/p+-a-Si:H/TCO/Ag grid is a promising structure for high efficiency and low cost.

关键词: silicon solar cell, a-Si:H/c-Si heterojunction, short-circuit current

Abstract:

A novel structure of Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si:H/p+-a-Si:H/TCO/Ag grid was designed to increase the efficiency of bifacial amorphous/crystalline silicon-based solar cells and reduce the rear material consumption and production cost. The simulation results show that the new structure obtains higher efficiency compared with the typical bifacial amorphous/crystalline silicon-based solar cell because of an increase in the short-circuit current (Jsc), while retaining the advantages of a high open-circuit voltage, low temperature coefficient, and good weak-light performance. Moreover, real cells composed of the novel structure with dimensions of 75 mm×75 mm were fabricated by a special fabrication recipe based on industrial processes. Without parameter optimization, the cell efficiency reached 21.1% with the Jsc of 41.7 mA/cm2. In addition, the novel structure attained 28.55% potential conversion efficiency under an illumination of AM 1.5 G, 100 mW/cm2. We conclude that the configuration of the Ag grid/SiNx/n+-c-Si/n-c-Si/i-a-Si:H/p+-a-Si:H/TCO/Ag grid is a promising structure for high efficiency and low cost.

Key words: silicon solar cell, a-Si:H/c-Si heterojunction, short-circuit current

中图分类号:  (Semiconductor-device characterization, design, and modeling)

  • 85.30.De
88.30.gg (Design and simulation) 85.60.Gz (Photodetectors (including infrared and CCD detectors))