Issue 8, 2023

Citric acid tuned negative thermal quenching of all inorganic copper-based perovskites

Abstract

Copper-based perovskites, with lower electronic dimensions and high photoluminescence quantum yields (PLQY), which are non-toxic and thermally stable, have been reported since 2019 and have immediately attracted great attention. So far, only a few studies have researched the temperature-dependent photoluminescence properties, posing a challenge in ensuring the stability of the material. In this paper, the temperature-dependent photoluminescence properties have been investigated in detail, and a negative thermal quenching of all-inorganic CsCu2I3 perovskites has been studied. Moreover, the negative thermal quenching property can be tuned with the assistance of citric acid, which has not been reported before. The Huang–Rhys factors are calculated to be 46.32/38.31, which is higher than for many semiconductors and perovskites.

Graphical abstract: Citric acid tuned negative thermal quenching of all inorganic copper-based perovskites

Supplementary files

Article information

Article type
Paper
Submitted
14 Jan 2023
Accepted
01 Feb 2023
First published
13 Feb 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 5428-5436

Citric acid tuned negative thermal quenching of all inorganic copper-based perovskites

L. Yao, H. Meng and M. Liu, RSC Adv., 2023, 13, 5428 DOI: 10.1039/D3RA00279A

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