Chemistry

Halide perovskites as disposable epitaxial templates for the phase-selective synthesis of lead sulfochloride nanocrystals

S. Toso, M. Imran, et al.

This groundbreaking study reveals how CsPbCl3 perovskite nanocrystals can selectively synthesize lead sulfochlorides, such as Pb3S2Cl2 and Pb4S3Cl2. By controlling the process of nucleation and templating, researchers were able to produce phase-pure Pb4S3Cl2 nanocrystals with striking optoelectronic properties. This research was conducted by a team of experts including Stefano Toso and Muhammad Imran.

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Abstract

This study demonstrates the use of CsPbCl3 perovskite nanocrystals to control the phase-selective synthesis of lead sulfochlorides, Pb3S2Cl2 and Pb4S3Cl2. Homogeneous nucleation in solution produces Pb3S2Cl2 nanocrystals, while the presence of CsPbCl3 leads to Pb4S3Cl2/CsPbCl3 epitaxial heterostructures. The perovskite template is then etched, yielding phase-pure Pb4S3Cl2 nanocrystals. The optoelectronic properties of both lead sulfochlorides are investigated, showing remarkable similarities despite differences in stoichiometry and structure.

Publisher

Nature Communications

Published On

Jul 08, 2022

Authors

Stefano Toso, Muhammad Imran, Enrico Mugnaioli, Anna Moliterni, Rocco Caliandro, Nadine J. Schrenker, Andrea Pianetti, Juliette Zito, Francesco Zaccaria, Ye Wu, Mauro Gemmi, Cinzia Giannini, Sergio Brovelli, Ivan Infante, Sara Bals, Liberato Manna

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