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APPLIED PHYSICS LETTERS
Volume 92, Issue 1, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2823578
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Plasmon-active silver nanoparticle layers were included in solution-processed bulk-heterojunction solar cells. Nanoparticle layers were fabricated using vapor-phase deposition on indium tin oxide electrodes. Owing to the increase in optical electrical field inside the photoactive layer, the inclusion of such particle films lead to increased optical absorption and consequently increased photoconversion at solar-conversion relevant wavelengths. The resulting solar energy conversion efficiency for a bulk heterojunction photovoltaic device of poly(3-hexylthiophene)/[6,6]-phenyl C-61 butyric acid methyl ester was found to increase from 1.3%+/- 0.2% to 2.2%+/- 0.1% for devices employing thin plasmon-active layers. Based on six measurements, the improvement factor of 1.7 was demonstrated to be statistically significant. (c) 2008 American Institute of Physics.
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