Enhancement of the efficiency and thermal stability of the double perovskite Cs2AgInCl6 single crystal by Sc substitution

Liyan Chen; Hangjie Jiang; Zhaohua Luo; Guoqiang Liu; Xianhui Wu; Yongfu Liu; Peng Sun; Jun Jiang

doi:10.1039/D2MA00139J

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Enhancement of the efficiency and thermal stability of the double perovskite Cs₂AgInCl₆ single crystal by Sc substitution†

Liyan Chen,^ab Hangjie Jiang,^ac Zhaohua Luo,

*^a Guoqiang Liu,

^a Xianhui Wu,^ac Yongfu Liu,

^a Peng Sun

^a and Jun Jiang*^a

Author affiliations

* Corresponding authors

^a Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
E-mail: luozhaohua@nimte.ac.cn, jjun@nimte.ac.cn

^b Nano Science and Technology Institute, University of Science and Technology of China, Suzhou 215123, P. R. China

^c School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, P. R. China

Abstract

Cs₂AgInCl₆ lead-free double perovskite materials have potential applications in lighting and high-energy ray detection. However, the transition of Cs₂AgInCl₆ single crystals (SCs) is parity forbidden, resulting in low photoluminescence (PL) efficiency. In this study, we provide a strategy to break the parity forbidden transition by substituting Sc for In. The PL efficiency is greatly increased by 43%. In addition, the thermal stability is improved from 7.4%@475 K to 51.3%@475 K, which is attributed to the formation of Sc–Cl covalent bonds instead of In–Cl ionic ones. These results demonstrate that a suitable method makes a great contribution to promoting the possible application of Cs₂AgInCl₆ in the future.

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Article information

DOI: https://doi.org/10.1039/D2MA00139J
Article type: Paper
Submitted: 08 Feb 2022
Accepted: 12 Apr 2022
First published: 21 Apr 2022
This article is Open Access

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Mater. Adv., 2022,3, 4381-4386

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Enhancement of the efficiency and thermal stability of the double perovskite Cs₂AgInCl₆ single crystal by Sc substitution

L. Chen, H. Jiang, Z. Luo, G. Liu, X. Wu, Y. Liu, P. Sun and J. Jiang, Mater. Adv., 2022, 3, 4381 DOI: 10.1039/D2MA00139J

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