发光学报2013，Vol.34Issue(6)：769-775,7.DOI:10.3788/fgxb20133406.0769
基于光栅结构的砷化镓高效率吸收层设计
Grating Based Absorption Layer for Enhanced Absorption in Gallium Arsenide Solar Cells
摘要
Abstract
A design is proposed to significantly increase the absorption of gallium arsenide thin-film layer.This is achieved by patterning a grating in the layer.By using rigorous coupled wave method,the absorption efficiency in the range of 300 ～ 900 nm has been analyzed for GaAs layer with rectangular and triangle gratings.The results show that the absorption efficiency of the two structures can be improved relative to the flat absorption layer and the peak absorption rate can be increased by 55.9％.And the structural parameters of the two structures have been also optimized.By analyzing the incident angular dependence of the two structures,it is concluded that solar cells with the triangular absorption layer have better characteristics in the same condition of thickness and filling factor.On the other hand,the finite element method is used to calculate the field distribution for different absorption layers.Good absorption enhancement can be observed directly from the absorption layer with gratings.The research provides a reference for the preparation of solar cell structures with high performance.关键词
砷化镓/吸收层/光栅/吸收效率Key words
GaAs/ absorption layer/ grating/ absorption分类
数理科学引用本文复制引用
郝宇,孙晓红,孙燚,张旭,贾巍..基于光栅结构的砷化镓高效率吸收层设计[J].发光学报,2013,34(6):769-775,7.基金项目
国家自然科学基金(11104251)资助项目 （11104251）
