Issue 39, 2024

Investigating energy transfer in lanthanide-doped double perovskites exhibiting visible and near-infrared emission

Abstract

The integration of lanthanide ions (Ln3+) into halide double perovskites has emerged as a promising approach to tailor their optical and electronic properties for optoelectronic applications. In this study, an Sb3+–Tm3+ co-doped Cs2NaInCl6 double perovskite was synthesized via a simple hydrothermal method. The prepared Cs2NaInCl6:Sb3+–Tm3+ exhibits a single-crystal octahedral structure and achieves an optimal NIR photoluminescence quantum yield of 20%. The co-doping strategy with Sb3+ and Tm3+ facilitates energy transfer from Sb3+ to Tm3+, leading to the appearance of an NIR emission peak at 1220 nm. Temperature-dependent (80 to 300 K) photoluminescence measurements elucidate the excitation and emission mechanisms. Through the deposition of the perovskite on a commercial 365 nm LED chip, a pc-LED was engineered to be capable of producing both visible light and NIR emissions.

Graphical abstract: Investigating energy transfer in lanthanide-doped double perovskites exhibiting visible and near-infrared emission

Supplementary files

Article information

Article type
Paper
Submitted
20 Jul 2024
Accepted
24 Aug 2024
First published
06 Sep 2024

J. Mater. Chem. C, 2024,12, 15981-15986

Investigating energy transfer in lanthanide-doped double perovskites exhibiting visible and near-infrared emission

J. Cao, B. Tang, T. Li, M. Wei, X. Zhang, M. Zheng, B. Dong, X. Li, Y. Cong, M. S. Molokeev and B. Lei, J. Mater. Chem. C, 2024, 12, 15981 DOI: 10.1039/D4TC03099K

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