Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 13: Poster Session I
HL 13.42: Poster
Montag, 12. März 2018, 17:30–19:30, Poster B
Insights into lead-free double perovskite Cs2AgBiBr6 thin films for photovoltaic application — •Martina Pantaler1, Svetlana Syrotinskaya2, Selina Olthof3, Alexsander Schmitz4, Christian Fettkenhauer1, Irina Anusca1, Niels Benson2, Gard Bacher4, Roland Schmechel2, and Doru C. Lupascu1 — 1Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen Universitätsstraße 15, 45141 Essen — 2Institute of Technology for Nanostructures and Technology (NST), University of Duisburg-Essen, Bismarckstraße 81, 47057 Duisburg — 3Department of Chemistry, University of Cologne, Luxemburger Straße 116, 50939 Köln — 4Department of Electrical Engineering and Information Technology, University of Duisburg-Essen, Bismarckstrasse 81 BA, 47057 Duisburg
The double perovskites are a promising lead free alternative to MAPbI3 based perovskite solar cell. Promising photovoltaic properties are long carrier recombination lifetime, good stability against air and moisture, low effective carrier masses, and band gap around 2 eV. We investigate double perovskite thin films and the possibility of solar cell fabrication. We prepared thin films on different substrates using spin-coating. Their crystalline structure, chemical composition, and morphology can be investigated using XPS, XRD, and SEM. Measuring time-resolved photoluminescence we got better insights into the charge carrier lifetime of double perovskite thin film. Finally we determined the valance band energy using ultraviolet photoelectron spectroscopy. Inverted (p-i-n) planar solar cell achieves PCE of 0,42%.