We have synthesized MAPbX3 (I, Br & Cl) and CsPbX3 perovskite quantum dots but MASnX3 and CsSnI3 quantum dots are not synthesized yet.How can we synthesize Pb replaced quantum dots perovskites?
I think these papers will provide you some insight
1. Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties, inorganic chemistry including bioinorganic chemistry,
Constantinos C. Stoumpos, Christos D. Malliakas, and Mercouri G. Kanatzidis*
Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
Inorg. Chem., 2013, 52 (15), pp 9019–9038
DOI: 10.1021/ic401215x
2. Chen, Q., De Marco, N., Yang, Y.M., Song, T.B., Chen, C.C., Zhao, H., Hong, Z., Zhou, H. and Yang, Y., 2015. Under the spotlight: The organic–inorganic hybrid halide perovskite for optoelectronic applications. Nano Today, 10(3), pp.355-396.
After a long time I got the some explanation about my question. I have tried to synthesize MASnBr3 perovskite QDs but I did not get good emission (got very low blue emission). So 100% replacement of Pb from perovskite system is very challenging with Sn due to lower ion conductivity of Sn. Low ionic conductivity of perovskite QDs caused surface defects and makes the material unstable. I think that,s why it is challenging task to prepare MA/CsSnBr3 PQDs.
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