Stable deep-blue FAPbBr3 quantum dots facilitated by amorphous metal halide matrices

Wei Shen; Yue Qiu; Jiayu Jiang; Zhihua Chen; Yanxing He; Hao Cui; Lihui Liu; Gang Cheng; Andrey N. Aleshin; Shufen Chen

doi:10.1039/D3CC03415A

Stable deep-blue FAPbBr₃ quantum dots facilitated by amorphous metal halide matrices†

Wei Shen,‡*^a Yue Qiu,‡^a Jiayu Jiang,^a Zhihua Chen,^a Yanxing He,^a Hao Cui,^a Lihui Liu,^a Gang Cheng,

^b Andrey N. Aleshin^c and Shufen Chen

*^a

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* Corresponding authors

^a State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, People's Republic of China
E-mail: iamwshen@njupt.edu.cn, iamsfchen@njupt.edu.cn

^b State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China

^c Loffe Institute, St. Petersburg 194021, Russia

Abstract

This communication describes a strategy to synthesize stable deep blue FAPbBr₃ quantum dots (QDs) by constructing a matrix structure. Amorphous Ni²⁺-based metal halide matrices can stabilize QDs from both chemical and physical factors, and Ni²⁺ doping can further enhance their structural stability due to lattice shrinking. Such deep blue QD films exhibit stable X-ray diffraction patterns and photoluminescence even after 245 days of storage.

This article is part of the themed collection: Fundamental Processes in Optical Nanomaterials

Chemical Communications

Stable deep-blue FAPbBr₃ quantum dots facilitated by amorphous metal halide matrices†

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Stable deep-blue FAPbBr₃ quantum dots facilitated by amorphous metal halide matrices

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