Photocurrent generation and enhancement by nanoparticles are known to be affected by size, shape, and proximity of neighboring nanoparticles We assess how plasmonic effects from  arrays of cuboidal silver nanoparticles and spheres influence the photocurrent performance of polymer photovoltaic devices incorporating a blend of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as active layer. Nanoparticles were assembled on either tin-oxide (ITO)-coated and silicon glass using the Langmuir Blodgett (LB) technique at different coverage density forming 2D ordered arrays. Our results demonstrate that for solar cell structures with 11.9, % surface coverage, Incident photon-to-photocurrent conversion efficiency (IPCE) is increased by 20 % (from 50% to 70%) whereas efficiency (?) is increased by 24 % from the reference device. Exciton-plasmon interactions through photoluminescence and absorption measurements of the thin-films as a function of particle density and the proximity of neighboring particle are also highlighted

Organic bulk heterojunction photovoltaic devices incorporating 2D arrays of cuboidal silver nanoparticles: Plasmon enhanced performance

245th National Meeting (2013)

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