Demonstration of enhanced absorption in thin film Si solar cells with textured photonic crystal back reflector
Demonstration of enhanced absorption in thin film Si solar cells with textured photonic crystal back reflector
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DOI：
10.1063/1.3039787
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发表时间：
2008-12
影响因子：
4
通讯作者：
Lingping Zeng;P. Bermel;Y. Yi;B. A. Alamariu;K. Broderick;Jifeng Liu;C. Hong;X. Duan;J. Joannopoulos;L. Kimerling
中科院分区：
文献类型：
--
作者：
Lingping Zeng;P. Bermel;Y. Yi;B. A. Alamariu;K. Broderick;Jifeng Liu;C. Hong;X. Duan;J. Joannopoulos;L. Kimerling
在此，作者报告了一个强大的光捕获计划，纹理光子晶体（TPC）背面反射器，薄膜硅太阳能电池的实验应用。TPC将一维光子晶体作为分布式布拉格反射器与衍射光栅相结合。如散射矩阵分析所设计的，通过高反射率和大角度衍射来强烈增强光吸收。采用有源层转移技术制备了厚度为5 μm的TPC单晶薄膜硅太阳电池。与理论预测的28%相比，测量的短路电流密度Jsc增加了19%。
Herein the authors report the experimental application of a powerful light trapping scheme, the textured photonic crystal (TPC) backside reflector, to thin film Si solar cells. TPC combines a one-dimensional photonic crystal as a distributed Bragg reflector with a diffraction grating. Light absorption is strongly enhanced by high reflectivity and large angle diffraction, as designed with scattering matrix analysis. 5 μm thick monocrystalline thin film Si solar cells integrated with TPC were fabricated through an active layer transfer technique. Measured short circuit current density Jsc was increased by 19%, compared to a theoretical prediction of 28%.