Position-controlled III-V compound semiconductor nanowire solar cells by selective-area metal-organic vapor phase epitaxy |
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Authors: | Fukui Takashi Yoshimura Masatoshi Nakai Eiji Tomioka Katsuhiro |
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Institution: | Graduate School of Information Science and Technology, Hokkaido University, N14, W9, Sapporo, 060-0814, Japan. fukui@rciqe.hokudai.ac.jp |
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Abstract: | 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. |
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