Mr. Timothy McWhorter Profile

Timothy McWhorter

at Univ of Oklahoma

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Proceedings Article | 5 March 2021 Poster + Presentation

High-efficiency photoluminescence properties of ternary copper(I) halides

Tielyr Creason, Timothy McWhorter, Mao-Hua Du, Bayrammurad Saparov

Proceedings Volume 11706, 117061N (2021) https://doi.org/10.1117/12.2582837

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Ternary group 11 halides, especially those utilizing copper (I), have recently been explored as relatively non-toxic alternatives to the popular luminescent lead halide perovskites. This talk will focus on one such family, A2CuX3 (A=Rb+, K+; X= Cl-, Br-), which exhibit outstanding light emission properties, with up to unity photoluminescent quantum yields. These samples, along with other ternary group 11 halides, have been investigated through an in-depth optical characterization. The ultrabright photoluminescence in the studied group 11 halides is ascribed to self-trapped excitons localized on the [CuX3]2- anionic substructure based on density functional theory (DFT) calculations and optical spectroscopy results.

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