Berlin 2015 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 31: P3: Hybrid Photovoltaics and Preovskites
CPP 31.7: Poster
Dienstag, 17. März 2015, 14:00–16:00, Poster B
Lifetime of photogenerated charge carriers in methylammonium lead halide perovskite solar cells studied by transient photovoltage/photocurrent — •David Kiermasch1, Stefan Väth1, Andreas Baumann2, and Vladimir Dyakonov1,2 — 1Experimentelle Physik 6, Julius-Maximilians-Universität Würzburg, 97074 Würzburg — 2Bayerisches Zentrum für Angewandte Energieforschung, 97074 Würzburg
In the last few years solar cells based on organo-metal halide perovskites attracted a lot of attention. Since the first publication of a solar cell with a perovskite absorber in 2009, the efficiency nowadays reaches up to 20 %. Despite that, there is a lack of understanding on the working principles in this new kind of solar cells, like the transport and the recombination of the photogenerated charge carriers. We prepared methylammonium lead halide perovskite solar cells, namely CH3NH3PbI3 and CH3NH3PbI3−xClx in a planar configuration. The lifetime and the concentration of photogenerated charge carriers are studied by transient photovoltage/photocurrent and charge extraction experiments. We discuss our results for different device configurations.