Abstract
The lead free double perovskite Cs2AgBiBr6 is an upcoming alternative to lead based perovskites as absorber material in perovskite solar cells. So far, the majority of investigations on this interesting material have focused on polycrystalline powders and single crystals. We present vapor and solution based approaches for the preparation of Cs2AgBiBr6 thin films. Sequential vapor deposition processes starting from different precursors are shown and their weaknesses are discussed. Single source evaporation of Cs2AgBiBr6 and sequential deposition of Cs3Bi2Br9 and AgBr result in the formation of the double perovskite phase. Additionally, we show the possibility of the preparation of planar Cs2AgBiBr6 thin films by spin coating.
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Pantaler, M., Fettkenhauer, C., Nguyen, H.L. et al. Deposition routes of Cs2AgBiBr6 double perovskites for photovoltaic applications. MRS Advances 3, 1819–1823 (2018). https://doi.org/10.1557/adv.2018.151
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DOI: https://doi.org/10.1557/adv.2018.151