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宽波长太阳能电池抗反射层结构设计
引用本文:许宜申,顾济华,陶智,吴迪. 宽波长太阳能电池抗反射层结构设计[J]. 红外与激光工程, 2009, 38(6)
作者姓名:许宜申  顾济华  陶智  吴迪
作者单位:苏州大学物理科学与技术学院,江苏,苏州,215006;苏州大学物理科学与技术学院,江苏,苏州,215006;苏州大学物理科学与技术学院,江苏,苏州,215006;苏州大学物理科学与技术学院,江苏,苏州,215006
基金项目:江苏省自然科学基金,江苏省高校自然科学研究项目 
摘    要:为了降低太阳能电池表面对入射光的反射,提高其光电转换效率,设计了入射光谱在400~1100 nm宽波长范围内的二维亚微米抗反射层结构.该结构主要由高折射率ZnS膜层、低折射率MgF_2膜层及二维亚微米光栅层等组成.采用严格耦合波分析理论计算了此结构的反射特性,当ZnS膜层、MgF_(2)膜层、光栅深度及光栅周期分别为50 nm、150 nm、200 nm及400 nm,入射角在0~80°变化时,其平均反射率为7.76%.计算结果表明:所设计的抗反射层结构可有效降低太阳能电池表面对入射光的反射,从而提高其光电转换效率.

关 键 词:光栅  抗反射层  严格耦合波分析  太阳能电池

Design of a broadband anti-reflection coating for solar cells
XU Yi-shen,GU Ji-hua,TAO Zhi,WU Di. Design of a broadband anti-reflection coating for solar cells[J]. Infrared and Laser Engineering, 2009, 38(6)
Authors:XU Yi-shen  GU Ji-hua  TAO Zhi  WU Di
Abstract:Reflection of incident light from the surface of solar cells is one of the major mechanisms seriously affecting the photovoltaic transform efficiency of the solar cells. To reduce the reflection, a two dimensional submicron anti-reflection coating with the incident wavelength from 400 nm to 1100 nm was designed.The designed structure was mainly composed of a ZnS film, an MgF_2 film and a two dimensional submicron grating. The reflection efficiency of the structure was calculated by the rigorous coupled wave analysis theory. The average reflection efficiency of the designed anti-reflection coating was 7.76% when the incident angle varied from 0° to 80° with the height of the ZnS film, the MgF_2 film, the depth and the pitch of the grating of 50 nm, 150 nm, 200 nm and 400 nm respectively. Results show that the designed anti-reflection coating can effectively reduce the reflection from the Si surface to improve the photovoltaic transform efficiency of the solar cells.
Keywords:Grating  Anti-reflection coating  Rigorous coupled-wave analysis (RCWA)  Solar cells
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