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Xing Yan, David J. Poxson, Jaehee Cho, Roger E. Welser, Ashok K. Sood, Jong Kyu Kim and E. Fred Schubert Enhanced Omnidirectional Photovoltaic Performance of Solar Cells Using Multiple-Discrete-Layer Tailored- and Low-Refractive Index Anti-Reflection Coatings Advanced Functional Materials 23

Article first published online: 17 SEP 2012 | DOI: 10.1002/adfm.201201032

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A multiple-discrete-layer omnidirectional and broadband anti-reflection (AR) coating is demonstrated on an inverted metamorphic (IMM) triple-junction solar cell device. Due to an excellent refractive index matching with the ambient air and a genetic algorithm optimization of the discrete refractive index profile, the IMM device employing a four-layer AR coating shows better photovoltaic performance at all incident angles (0°–80°) than an IMM device employing a traditional double layer AR coating.

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