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    李涛, 周春兰, 宋洋, 杨海峰, 郜志华, 段野, 李友忠, 刘振刚, 王文静

    Theoretical analysis and experimental study of optical loss of metal contacts of crystalline silicon solar cells

    Song Yang, Gao Zhi-Hua, Li Tao, Yang Hai-Feng, Zhou Chun-Lan, Liu Zhen-Gang, Wang Wen-Jing, Duan Ye, Li You-Zhong
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    • 本文基于丝网印刷和丝网印刷后光诱导电镀太阳电池,分析了太阳电池前表面金属电极引起的光学损失的各种情况.考虑到空气-玻璃界面和金属电极两侧边缘区域的反射,通过将金属电极截面近似为半椭圆形模拟了电极的光学损失,计算得到的有效宽度比约为金属电极几何宽度的40%.通过对不同类型样品反射谱的测量计算,同时在理论模拟和实验测量上得到了太阳电池前表面金属电极的光学损失,相应的理论与实验结果相符合.
      One main factor of restricting industrial crystalline solar cell efficiency is the optical losses caused by the metal front side contacts, including the absorption loss and reflection loss. Based on screen-printed and screen-printed seed layers thickened by light-induced electroplating solar cells, in this paper various cases of optical losses due to the metal contacts are analyzed. Taking into account the reflections in the air-glass interface and the edge regions of metal contacts, the optical losses are simulated by assuming approximately half-oval cross-section of metal contacts. The results show that the effective width ratio is about 40% of the metal contact geometry width. By measuring and calculating the reflection spectra of different types of samples, the optical losses of the metal front side contacts of solar cells are obtained in theoretical simulation and experimental measurement. The corresponding theory and the experimental results are in good agreement with each other.
        • 基金项目:中国科学院知识创新工程重要方向项目(批准号:KGCX2-YW-382)和国家高技术研究发展计划(批准号:2007AA05Z437)资助的课题.
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      出版历程
      • 收稿日期:2010-11-04
      • 修回日期:2010-12-15
      • 刊出日期:2011-09-15

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