CdSe Nanorods Dominate Photocurrent of Hybrid CdSe−P3HT Photovoltaic Cell
ACS Nano2010Vol. 4(10), pp. 6132–6136
Citations Over TimeTop 10% of 2010 papers
Martin Schierhorn, Shannon W. Boettcher, Jeffrey Peet, Elison Matioli, Guillermo C. Bazan, Galen D. Stucky, Martin Moskovits
Abstract
Photovoltaic devices based on organic semiconductors require charge-separating networks (bulk heterojunctions) for optimal performance. Here we report on the fabrication of organic-inorganic photovoltaic devices with tailored (n-type) CdSe nanorod arrays aligned perpendicularly to the substrate. The nanorod lengths varied from 58 ± 12 to 721 ± 15 nm, while the diameters and inter-rod spacings were kept constant at 89.5 ± 7.5 and 41.3 ± 9.9 nm, respectively. Short-circuit densities improved linearly with nanorod length, resulting in power conversion efficiencies of up to 1.38% for cells with nanorods 612 ± 46 nm long. Notably, the cell's efficiency was dominated by exciton generation in the CdSe nanorods.
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