Issue 31, 2024

Rare earth-based Cs2NaRECl6 (RE = Tb, Eu) halide double perovskite nanocrystals with multicolor emissions for anticounterfeiting and LED applications

Abstract

Metal halide double perovskites are a promising alternative to lead-based perovskites. Especially, rare earth (RE)-based halide double perovskites have attracted much attention due to their unique optical properties. As RE3+ ions could be served not only as the component of the matrix but also as the luminescence centers, the chemical composition of RE-based halide double perovskites can be simplified and tunable luminescence could be achieved. In this work, Cs2NaRECl6 (RE = Tb, Eu) halide double perovskite nanocrystals were synthesized by the hot injection method. Cs2NaRECl6 nanocrystals exhibit not only the intrinsic host emission but also the characteristic emissions of RE3+ ions. Furthermore, the excitation-wavelength-dependent multicolor emissions of Cs2NaRECl6 nanocrystals make them highly potential for anticounterfeiting applications. Multicolor LED devices based on various components of Cs2NaRECl6 could be obtained, providing promising candidates for optoelectronic applications.

Graphical abstract: Rare earth-based Cs2NaRECl6 (RE = Tb, Eu) halide double perovskite nanocrystals with multicolor emissions for anticounterfeiting and LED applications

Supplementary files

Article information

Article type
Paper
Submitted
25 Apr 2024
Accepted
28 Jun 2024
First published
01 Jul 2024

J. Mater. Chem. C, 2024,12, 11778-11784

Rare earth-based Cs2NaRECl6 (RE = Tb, Eu) halide double perovskite nanocrystals with multicolor emissions for anticounterfeiting and LED applications

Y. Li, Q. Yang, H. Li, X. Fu, H. Yue, Z. Li, J. Feng and H. Zhang, J. Mater. Chem. C, 2024, 12, 11778 DOI: 10.1039/D4TC01697A

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