Position-Controlled III–V Compound Semiconductor Nanowire Solar Cells by Selective-Area Metal–Organic Vapor Phase Epitaxy
We demonstrate position-controlled III–V semiconductor nanowires (NWs) by using selective-area metal–organic vapor phase epitaxy and their application to solar cells. Efficiency of 4.23% is achieved for InP core–shell NW solar cells. We form a ‘flexible NW array’ without a substrate, which has the advantage of saving natural resources over conventional thin film photovoltaic devices. Four junction NW solar cells with over 50% efficiency are proposed and discussed.
KeywordsSolar cell InP Semiconductor nanowire Photovoltaic
The authors would like to thank Profs. Junichi Motohisa, Shinjiro Hara, and Kenji Hiruma, as well as Mr. Hajime Goto, for their fruitful discussions.
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