High efficiency and stable photoluminescence of CH3NH3PbBr3@CsPbBr3 perovskite quantum dots

Yajing Wang; Ahui Li; Yizhen Hu; Yanping Bao; Yongfan Zhang; Xiaolin Hu; Naifeng Zhuang

doi:10.1039/D0CC06920E

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High efficiency and stable photoluminescence of CH₃NH₃PbBr₃@CsPbBr₃ perovskite quantum dots†

Yajing Wang,^ab Ahui Li,^ab Yizhen Hu,^ab Yanping Bao,^ab Yongfan Zhang,

^a Xiaolin Hu

*^ab and Naifeng Zhuang^ab

Author affiliations

* Corresponding authors

^a College of Chemistry, Fuzhou University, Fuzhou 350108, China

^b Institute of Optical Crystalline Materials, Fuzhou University, Fuzhou 350108, China
E-mail: linamethyst@fzu.edu.cn

Abstract

CH₃NH₃PbBr₃@CsPbBr₃ quantum dots were prepared by epitaxially growing a CsPbBr₃ shell on the surface of CH₃NH₃PbBr₃ due to their similar crystal structures. The inorganic CsPbBr₃ shell provides enhanced stability for the CH₃NH₃PbBr₃ core. Compared with that of CH₃NH₃PbBr₃, the photoluminescence of CH₃NH₃PbBr₃@CsPbBr₃ quantum dots is not only strong, but also stable for months, in addition to having a high quantum yield.

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Article information

DOI: https://doi.org/10.1039/D0CC06920E
Article type: Communication
Submitted: 17 Oct 2020
Accepted: 21 Dec 2020
First published: 21 Dec 2020

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Chem. Commun., 2021,57, 1356-1359

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High efficiency and stable photoluminescence of CH₃NH₃PbBr₃@CsPbBr₃ perovskite quantum dots

Y. Wang, A. Li, Y. Hu, Y. Bao, Y. Zhang, X. Hu and N. Zhuang, Chem. Commun., 2021, 57, 1356 DOI: 10.1039/D0CC06920E

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