期刊
IEEE JOURNAL OF PHOTOVOLTAICS
卷 4, 期 3, 页码 962-967出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2014.2304359
关键词
Biomimetics; optical films; photovoltaic cells; III-V semiconductor materials
资金
- Center for Energy Efficient Materials, which is an Energy Frontier Research Center-U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001009]
- National Science Foundation [DGE-1144085]
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.
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