PHOTOVOLTAIC DEVICE
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United States of America Patent
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app pub date -
Mar 6, 2015
filing date -
Aug 1, 2013
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Abstract
A photovoltaic device includes a photovoltaic portion having light-receiving surface that receives light, the photovoltaic portion including a nano-structure. the nano-structure includes one or more first regions and one or more second regions. In each of the one or more first regions, semiconductor layer portions are arranged at a first density, and in each of the one or more second regions, at least one semiconductor layer portion is arranged at a second density lower than the first density. The nano-structure includes an insulator having a refractive index lower than that of the semiconductor layer portions arranged in the one or more first regions and the one or more second regions.
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