Abstract
Metal nanoparticles (MeNPs) represent a promising class of materials for enhancing light harvesting in organic photovoltaics (OPVs). We conduct systematic finite-difference time-domain calculations for assessing the impact of size, shape, material and particle density of MeNPs as well as the influence of spectral overlap for given particle/semiconductor pairs in nanoparticle enhanced organic solar cells. Those aspects are critical in determining the enhancement in the overall performance of OPV cells. We observe single-wavelength absorption enhancement factors larger than 20 in the near infrared spectral region of widely used polymer blends.
© 2011 Optical Society of America
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