Ultrabroadband and Wide-Angle Hybrid Antireflection Coatings With Nanostructures

被引:22
作者
Perl, Emmett E. [1 ]
Lin, Chieh-Ting [1 ]
McMahon, William E. [2 ]
Friedman, Daniel J. [2 ]
Bowers, John E. [1 ]
机构
[1] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
[2] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源
IEEE JOURNAL OF PHOTOVOLTAICS | 2014年 / 4卷 / 03期
基金
美国国家科学基金会;
关键词
Biomimetics; optical films; photovoltaic cells; III-V semiconductor materials; CELL;
D O I
10.1109/JPHOTOV.2014.2304359
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Ultrabroadband and wide-angle antireflection coatings (ARCs) are essential to realizing efficiency gains for state-of-the-art multijunction photovoltaic devices. In this study, we examine a novel design that integrates a nanostructured antireflection layer with a multilayer ARC. Using optical models, we find that this hybrid approach can reduce reflected AM1.5D power by 10-50 W/m(2) over a wide angular range compared to conventional thin-film ARCs. A detailed balance model correlates this to an improvement in absolute cell efficiency of 1-2%. Three different ARC designs are fabricated on indium gallium phosphide, and reflectance is measured to show the benefit of this hybrid approach.
引用
收藏
页码:962 / 967
页数:6
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