Room Temperature Synthesis of All Inorganic Lead-Free Zero-Dimensional Cs4SnBr6 and Cs3KSnBr6 Perovskites
© 2019 American Chemical Society. Lead halide perovskites are excellent candidates for photoelectronic and photovoltaic applications, but the toxicity from lead is extremely concerning. Recently, Sn-based zero-dimensional lead-free perovskites synthesized using solid-state reaction techniques have become a new focus in the field. Here, we report a simple room temperature antisolvent method for the synthesis of all inorganic lead-free green emissive Cs4SnBr6 (emission at 524 nm) and cyan emissive Cs3KSnBr6 (emission at 500 nm) zero-dimensional perovskites. Their photoluminescence quantum yields reach 20% and 35%, respectively. In addition, they maintain their emission for 46 and 55 h in the air, respectively, compared to only 5 min of CsSnBr3. This method provides a convenient way to do the research and apply these highly emissive perovskites.
Publication Source (Journal or Book title)
Zhang, X., Wang, H., Wang, S., Hu, Y., Liu, X., Shi, Z., Colvin, V., Wang, S., Yu, W., & Zhang, Y. (2020). Room Temperature Synthesis of All Inorganic Lead-Free Zero-Dimensional Cs4SnBr6 and Cs3KSnBr6 Perovskites. Inorganic Chemistry, 533-538. https://doi.org/10.1021/acs.inorgchem.9b02806