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Enhancing light harvesting in organic solar cells with pyramidal rear reflectors
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/content/aip/journal/apl/99/2/10.1063/1.3609870
2011-07-14
2014-10-21

Abstract

We report enhanced light absorption in semi-transparent organic solar cells by using pyramidal rear reflectors to induce light trapping in the photoactive layer. Pyramidal rear reflectors with a base angle of 30° were molded from a transparent polymer on planar substrates. Compared with a planar rear reflector, the pyramidal structure leads to a more than 2.5 times longer path length in the active layer for the incident light. Experimental demonstration showed an 11%–75% enhancement in the photocurrent and overall efficiency of the solar cells, depending on the device size and active layer thickness.

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Scitation: Enhancing light harvesting in organic solar cells with pyramidal rear reflectors
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/2/10.1063/1.3609870
10.1063/1.3609870
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