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9 October 2012 Enhanced light absorption in an ultrathin silicon solar cell utilizing plasmonic nanostructures
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Abstract
Nowadays, bringing photovoltaics to the market is mainly limited by high cost of electricity produced by the photovoltaic solar cell. Thin-film photovoltaics offers the potential for a significant cost reduction compared to traditional photovoltaics. However, the performance of thin-film solar cells is generally limited by poor light absorption. We propose an ultrathin-film silicon solar cell configuration based on SOI structure, where the light absorption is enhanced by use of plasmonic nanostructures. By placing a one-dimensional plasmonic nanograting on the bottom of the solar cell, the generated photocurrent for a 200 nm-thickness crystalline silicon solar cell can be enhanced by 90% in the considered wavelength range. These results are paving a promising way for the realization of high-efficiency thin-film solar cells.
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Sanshui Xiao and Niels Asger Mortensen "Enhanced light absorption in an ultrathin silicon solar cell utilizing plasmonic nanostructures", Proc. SPIE 8457, Plasmonics: Metallic Nanostructures and Their Optical Properties X, 84572A (9 October 2012); https://doi.org/10.1117/12.929499
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