一种增加光吸收的非晶硅薄膜太阳能电池的设计  

Design of An Amorphous Silicon Thin-film Sloar Cell with Absorption Enhancement

作　　者：沈宏君[1] 张瑞[1] 卢辉东[1] 

机构地区：[1]宁夏大学物理电气信息学院,宁夏银川750021

出　　处：《发光学报》2013年第6期753-757,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61167002)资助项目

摘　　要：分别设计与优化了非晶薄膜太阳能电池的上表层和电池底部结构,采用严格耦合波方法(RCWA)数值计算了电池的光吸收。计算结果表明:在仅考虑TM偏振的情况下,优化后的增透膜与无增透膜相比,300～840 nm波长范围内的吸收平均提高了35%左右;优化后的背反射器与无背反射器相比,700～840 nm波长范围内的吸收平均提高了23%左右。该非晶硅薄膜太阳能电池结构在全角宽频范围内有较高吸收,可以提高太阳能电池的转化效率。The front-surface and the bottom of amorphous silicon （a-Si） thin-film solar cell are de- signed respectively. Light absorption is calculated by using the rigorous coupled wave analysis（ RC- WA） . In TM polarization, the absorption of solar ceils with optimized AR coating can be increased by an average of 35% compared with that without AR coating in the range of 300 -840 nm. Fur- thermore, the absorption of solar cells with optimized back reflector can be increased by an average of 23% compared with that without back reflector in the range of 700 - 840 nm. The amorphous sili- con（a-Si） thin-film solar cell that we design has broadband and omnidirectional absorption, so that it can improve the conversion efficiency of solar ceils.

关 键 词：增透膜 衍射光栅 光子晶体 吸收 太阳能电池 

分 类 号：O431[机械工程—光学工程]