Design optimization of highly efficient spectrum-splitting and beam-concentrating diffractive optical element for lateral multijunction solar cells  

作　　者：王进泽 叶佳声 黄庆礼 许信 李冬梅 孟庆波 杨国桢 

机构地区：[1]Key Laboratory for Renewable Energy CAS), Institute of Physics, Chinese Academy of Sciences [2]Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences [3]Department of Physics, Capital Normal University [4]Beijing Key Laboratory for THz Spectroscopy and Imaging,Key Laboratory of THz Optoelectronics, Ministry of Education [5]Laboratory of Optical Physics, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2014年第4期319-323,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grants Nos.91233202,21173260,and 51072221);the National Basic Research Program of China(Grant No.2012CB932903

摘　　要：Two improved algorithms are proposed to extend a diffractive optical element （DOE） to work under the broad spec- trum of sunlight. An optimum design has been found for the DOE, with a weighted average optical efficiency of about 6.8% better than that of the previous design. The optimization of designing high optical efficiency DOEs will pave the way for future designs of high-efficiency, low-cost lateral multijunction solar cells based on such a DOE.Two improved algorithms are proposed to extend a diffractive optical element （DOE） to work under the broad spec- trum of sunlight. An optimum design has been found for the DOE, with a weighted average optical efficiency of about 6.8% better than that of the previous design. The optimization of designing high optical efficiency DOEs will pave the way for future designs of high-efficiency, low-cost lateral multijunction solar cells based on such a DOE.

关 键 词：thickness optimization solar cell SPLIT CONCENTRATION diffractive optical element 

分 类 号：TM914.4[电气工程—电力电子与电力传动] O436.1[机械工程—光学工程]