Self-Assembled Plasmonic Electrodes for High-Performance Organic Photovoltaic Cells

Tuesday, October 18, 2011: 4:35 PM
102 F (Minneapolis Convention Center)
Wade A. Luhman1, Si Hoon Lee2, Timothy W. Johnson2, Russell J. Holmes1 and Sang-Hyun Oh2, (1)Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, (2)Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN

Thin Ag films perforated with subwavelength hole arrays are used as transparent conducting electrodes for organic photovoltaic cells. Plasmonic electrodes are fabricated using nanosphere lithography to create hexagonal nanohole arrays. Organic photovoltaic cells constructed using a nanopatterned Ag anode show power conversion efficiencies that exceed those of devices constructed on conventional indium-tin-oxide, independent of light polarization. In comparison to cells constructed on unpatterned Ag, the power conversion efficiency is noted to double with patterning.

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