| 非晶硅光伏电池表面高效光陷阱结构设计 |
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| 引用本文： | 周骏,孙永堂,孙铁囤,刘晓,宋伟杰.非晶硅光伏电池表面高效光陷阱结构设计[J].物理学报,2011,60(8):88802-088802. |
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| 作者姓名： | 周骏 孙永堂 孙铁囤 刘晓 宋伟杰 |
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| 作者单位： | 1. 宁波大学光学与光电子技术研究所, 宁波 315211;
2. 江苏大学光信息科学与技术系, 镇江 212013;
3. 常州亿晶光电科技有限公司, 常州 213223;
4. 中国科学院宁波材料技术与工程研究所, 宁波 315201 |
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| 基金项目： | 国家自然科学基金(批准号:60977048)、中国科学院国际合作计划(批准号:038611)、宁波市国际科技合作计划(批准号:2010D10018)、宁波大学王宽成幸福基金和常州亿晶光电科技有限公司资助的课题. |
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| 摘 要： | 提出一种应用于非晶硅光伏电池表面的光陷阱结构,该结构主要由衍射光栅、低折射率MgF2膜层、高折射率ZnS膜层及金属Ag反射镜组成.在标准测试条件(AM1.5,100 mW/cm2和25 ℃)下,运用严格耦合波理论,通过计算400-1000 nm波段内的1 μm厚非晶硅光伏电池的吸收光子数加权平均ξAM1.5,优化光陷阱结构的设计参数.结果表明:对于电池前表面减反射结构,在衍射光栅周期为800 nm、高度为160
关键词：
光陷阱结构
衍射光栅
减反射膜
非晶硅光伏电池
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| 关 键 词： | 光陷阱结构 衍射光栅 减反射膜 非晶硅光伏电池 |
| 收稿时间： | 2010-08-12 |
Design of a highly efficient light-trapping structure for amorphous silicon solar cell |
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| Zhou Jun,Sun Yong-Tang,Sun Tie-Tun,Liu Xiao and Song Wei-Jie.Design of a highly efficient light-trapping structure for amorphous silicon solar cell[J].Acta Physica Sinica,2011,60(8):88802-088802. |
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| Authors: | Zhou Jun Sun Yong-Tang Sun Tie-Tun Liu Xiao and Song Wei-Jie |
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| Institution: | Institute of Optics and Photoelectronics, Ningbo University, Ningbo 315211, China; Department of Optical Engineering, Jiangsu University, Zhenjiang 212013, China;Department of Optical Engineering, Jiangsu University, Zhenjiang 212013, China;Changzhou Yijing Optical-Electronic Company Limited, Changzhou 213223, China;Institute of Optics and Photoelectronics, Ningbo University, Ningbo 315211, China;Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China |
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| Abstract: | A highly efficient light-trapping structure consisting of a diffractive grating, a MgF2 film, a ZnS film and Ag reflector, is used for a-Si:H solar cell. Using the rigorous coupled wave theory, the weighted absorptance photon number (ξAM1.5) of a 1 μm thick a-Si:H solar cell is calculated in a wavelength range from 400 to 1000 nm for the AM1.5 solar spectrum at 25 ℃. It is used to design the optimal parameters of the light-trapping structure. Results indicate that ξAM1.5 of the solar cell can reach 74.3%, if the period, the depth and the duty cycle of the diffractive grating, and the height of the MgF2 film and the ZnS film are 800 nm, 160 nm, 0.6125, 90 nm and 55 nm, respectively. If a ZnS/Ag film is fabricated on the rear surface of the solar cell, a larger ξAM1.5 (76.95%) can be obtained. It is demonstrated that the trapping structure is useful for elevating the efficiency of the solar cell. |
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| Keywords: | light-trapping structure diffractive grating antireflective film amorphous silicon solar cells |
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