Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.381
Publication date: 7th February 2022
CsSnX3 (X= Br, I) perovskites have drawn attention as a promising alternative to highly toxic lead based perovskite counterpart owing to their unique photophysical properties as optimal band gap energy for photovoltaic devices. However, tin (II) halide perovskites are instable because of Sn2+ ions can oxidize to Sn4+ because of atmospheric conditions (Moisture and temperature). Although CsSnX3 thin films have been reported with good results, there are few publications about synthesis of highly colloidal stable and moisture resistant (II) based perovskites. In this work, we sinthesized CsSnX3 (X= Br, I) nanocrystals by hot injection approach. We mixed differen precursors as tin (II) oxalate, because of oxalate ion hace improved stability on the resultant colloidal solution in n- hexane, By first time, nanocrystals could be washed with low polarity solvent ethyl acetate without degradation signals.
Authors acknowledge the finalcial support of European Union’s Horizon 2020 FET-OPEN research programme by DROP-IT project (No 862656)
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