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HL: Fachverband Halbleiterphysik
HL 84: Focus Session (CPP with HL): Hybrid photovoltaics and perovskites II
HL 84.5: Vortrag
Donnerstag, 19. März 2015, 16:30–16:45, C 130
Preparation and characterization of methylammonium lead halide perovskite solar cells in planar-type configuration — •Philipp Rieder1, Matthias Fischer1, Stefan Väth1, Andreas Baumann2, Kristofer Tvingstedt1, and Vladimir Dyakonov1,2 — 1Experimentelle Physik 6, Julius-Maximilians-Universität Würzburg, 97074 Würzburg — 2Bayerisches Zentrum für Angewandte Energieforschung, 97074 Würzburg
In recent years, the use of organometal halide compounds as the photoactive layer in solar cells has attracted a lot of attention, with power conversion efficiencies (PCE) reaching up to 20.1% already. The performance and properties of this material class are strongly dependent on the crystallinity of the layer, with the working principles still being unclear and part of ongoing research. By synthesizing our own methylammoniumiodide as the organic precursor, we are able to fabricate solution processed planar heterojunction perovskite solar cells with an active layer consisting of CH3NH3PbI3 or CH3NH3PbI3−xClx. PCE values of the working devices exceeding 10% under solar illumination are achieved. The crystallinity and surface quality of the films are analyzed via scanning electron microscopy, atomic force microscopy and x-ray diffraction. The solar cells are characterized by means of current-voltage measurements, external quantum efficiency and photoluminescence.