| Title: |
Broadband blue light emissions of one-dimensional hybrid Cu(I) halides with ultrahigh anti -water stability. |
| Authors: |
Lin, Na1,2 (AUTHOR), Li, Yun-Xia1 (AUTHOR), Liu, Yu1 (AUTHOR), Sun, Kai-Qi1 (AUTHOR), Zhang, Hong-Yan1 (AUTHOR), Lei, Xiao-Wu1 (AUTHOR) xwlei_jnu@163.com, Chen, Zhi-Wei1 (AUTHOR) zw_chen@jnxy.edu.cn |
| Source: |
Dalton Transactions: An International Journal of Inorganic Chemistry. 10/28/2024, Vol. 53 Issue 40, p16577-16584. 8p. |
| Subject Terms: |
*LEAD halides, *COPPER, *METAL halides, *BLUE light, *SURFACE analysis |
| Abstract: |
Low-dimensional organic–inorganic hybrid lead halide perovskites have attracted much interest in solid-state lighting and displays, but the toxicity and instability of lead halide are obstacles to their industrial applications, which must be overcome. As an alternative, Cu(I)-based hybrid metal halides have emerged as a new type of luminescent material owing to their diversified structure, adjustable luminescence, low toxicity and low cost. Herein, we report three one-dimensional (1D) hybrid Cu(I)-based halides with the general formula ACu2Br4 (A = [(Me)4-Pipz]2+ and [BuDA]2+ and [TMEDA]2+). These 1D hybrid Cu(I) halides display stable broadband blue emission with maximum emission peaks in the range of 445–474 nm and the highest photoluminescence quantum yield of 37.8%. Furthermore, in-depth experimental and theoretical investigations revealed that the broadband blue emissions originate from the radiative recombination of self-trapped excitons. Most importantly, there is no structural degradation and attenuation of emission intensity even after continuously soaking these halides in water for at least two months, demonstrating their ultra-high anti-water stability. Hirshfeld surface analysis shows that a large number of weak hydrogen bonds can protect the inorganic skeleton from degradation due to water. This work provides a new strategy for the design of water-stable Cu(I)-based halides with efficient blue emission and wide potential applications in humid environments. [ABSTRACT FROM AUTHOR] |
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