Regensburg 2016 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 24: Plasmonics and Nanooptics: Fabrication, Characterization and Applications
O 24.9: Poster
Montag, 7. März 2016, 18:15–20:30, Poster E
Plasmonically enhanced perovskite solar cells for photovoltaics — •Jonas Schwenzer1, Domenico Paone1, Justus Back2, Sabine Ludwigs2, and Harald Giessen1 — 14th Physics Institute and Research Center SCOPE, University of Stuttgart, Germany — 2Institut für Polymerchemie, Universität Stuttgart, Germany
Perovskite solar cells are the most promising alternative to silicon solar cells. Their record efficiency has increased from 9% to over 20% within the last three years. Further improvements are only possible if the photon to electron conversion efficiency can be increased. Here, we incorporated gold nanoparticles into the alumina scaffolding layer of perovskite solar cells to excite localized surface plasmon resonances. We investigated the short circuit current, open circuit voltage, external quantum efficiency, and power conversion efficiency in dependence of the gold nanoparticle concentration. A decrease in voltage was compensated by an increased current for optical densities below 0.1. Hence, the efficiency could be increased by 53% and 32% for optical densities of 0.05 and 0.1, respectively. Higher nanoparticle concentrations lead to decreased voltages and currents. Thus, we conclude that low concentrations of gold nanoparticles can be used to increase the current and thereby the performance of perovskite solar cells.