We investigate thin Ag films incorporating plasmonic nanohole arrays as transparent conducting electrodes for organic photovoltaic cells. Plasmonic electrodes are fabricated using nanosphere lithography to create hexagonal nanohole arrays over centimeter-sized areas. Devices 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.
Bibliographical noteFunding Information:
WAL and SHL contributed equally to this work. This work was supported by the National Science Foundation (CBET-0946723, CBET-1067681 and DMR-0819885). R.J.H. acknowledges support from the 3M Non-Tenured Faculty Grant. S.H.O. acknowledges support from the ACS Doctoral New Investigator Award.