Dresden 2017 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 36: Postersession I

DS 36.24: Poster

Mittwoch, 22. März 2017, 17:00–19:00, P2-EG

Bismuth and antimony-based lead free double perovskites — •Martina Pantaler, Irina Anusca, Christian Fettkenhauer, and Doru C. Lupascu — Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg Essen, Universitätsstraße 15 45141 Essen

Bismuth- or antimony-based lead-free double perovskites as Cs2AgBiBr6 have been considered as alternatives to the emerging lead-based perovskites for solar cell applications. Until now, the class of compounds, Cs2AgBiBr6 and Cs2AgBiCl6 have been synthesized, which crystallize in 3D crystal structure, where the rock-salt arrangement of B and C cations is energetically favored, primarily because of the large charge difference between monovalent and trivalent C cations. These Pb-free double perovskites have been reported to have promising PV properties, including long carrier recombination lifetime,good stability against air and moisture, and low carrier effective masses. In our work, we report the different synthesis paths (solid state synthesis, solution state synthesis and hydrothermal synthesis) including single crystals synthesis of a halide double perovskite, A2BCX6 (A=Cs+, Rb+, MA+, B=Ag+, Cu+, C=Sb3+, Bi3+, X=Cl-, Br-, I-). We explore different properties and possibility to be used in PV. Film deposition was performed using spin coating and vapor deposition. References [1] Zewen Xiao et al., ChemSusChem 2016, 9, 2628-2633