Facile Method for the Controllable Synthesis of Cs xPb yBr z-Based Perovskites

Jichao Zhu; Qian Di; Xixia Zhao; Xiaotong Wu; Xiaokun Fan; Qian Li; Weidong Song; Zewei Quan

doi:10.1021/acs.inorgchem.8b00645

Facile Method for the Controllable Synthesis of Cs _xPb _yBr _z-Based Perovskites

Inorg Chem. 2018 Jun 4;57(11):6206-6209. doi: 10.1021/acs.inorgchem.8b00645. Epub 2018 May 14.

Authors

Jichao Zhu^{1

2}, Qian Di¹, Xixia Zhao¹, Xiaotong Wu¹, Xiaokun Fan¹, Qian Li¹, Weidong Song^{1

2}, Zewei Quan¹

Affiliations

¹ Department of Chemistry , Southern University of Science and Technology (SUSTech) , Shenzhen , Guangdong 518055 , P. R. China.
² School of Chemistry and Chemical Engineering , Harbin Institute of Technology , Harbin 150001 , P. R. China.

PMID: 29757628
DOI: 10.1021/acs.inorgchem.8b00645

Abstract

We report a facile method to realize the selective synthesis of Cs _xPb _yBr _z-based perovskites, including CsPbBr₃, Cs₄PbBr₆ and CsPb₂Br₅. The use of an appropriate amount of N, N-dimethylformamide (DMF) solvent is experimentally determined to play a critical role in the controlled formation of various perovskite products. With continuously increasing DMF concentration, first CsPbBr₃ nanocrystals with tunable size can be achieved, and then the production of Cs₄PbBr₆ and CsPb₂Br₅ perovskite analogues is successively realized. Our findings present a novel path for the controlled synthesis of other perovskite analogues for specific applications.