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HL: Fachverband Halbleiterphysik
HL 61: Posters III (Organic-inorganic perovskite semiconductors; Organic photovoltaics and electronics; Photovoltaics; Energy science; New materials and concepts)
HL 61.10: Poster
Wednesday, March 18, 2015, 15:00–20:00, Poster F
Morphology of Methyl Ammonium Lead Iodide Thin Films Dependent on the Preparation Conditions — Martina Stumpp, •Jonas Horn, Raffael Rueß, Jan Tinz, and Derck Schlettwein — Justus-Liebig-Universität Gießen, Institut für Angewandte Physik, Heinrich-Buff-Ring 16, D-35392 Gießen
Solar cells based on perovskites as absorbing material have attained large attention in the last two years due to the strong increase in the efficiencies of these cells. Perovskites have the great advantage of a high charge carrier mobility, low non-radiative carrier recombination and strong solar absorption. In this study, thin films of methyl ammonium lead iodide (CH3NH3PbI3) were prepared by one- or two-step solution-based processes on different substrates. Profilometry measurements were performed to attain an understanding of the roughness and the thickness of the perovskite films. The detailed morphology of the films was analyzed with the help of laser confocal and scanning electron microscopy. The dependence of the different preparation methods as well as the use of different substrates on the morphology of the (CH3NH3PbI3) thin films is discussed.