化学
激发态
卤化物
星团(航天器)
铜
分子间力
碘化物
荧光粉
发光二极管
吸收(声学)
激发
斯托克斯位移
晶体结构
光化学
结晶学
光电子学
发光
分子
原子物理学
光学
无机化学
物理
电气工程
有机化学
计算机科学
程序设计语言
工程类
作者
Jing-Li Qi,Jiajing Wu,Shuai Yan,Jian Xu,Wenlong Liu,Sheng‐Ping Guo
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2023-11-07
卷期号:62 (46): 18825-18829
被引量:1
标识
DOI:10.1021/acs.inorgchem.3c03608
摘要
Herein, we successfully synthesized a stable copper iodide hybrid with a 0D structure, (C20H20P)2Cu2I4, in which [Cu2I4]2– dimers with a short Cu–Cu distance (2.64 Å) are isolated and surrounded by [C20H20P]+ organic cations. Bright broadband yellow emission (576 nm) featuring a wide excitation range from 240 to 450 nm was achieved, along with a large Stokes shift (211 nm), long-lived lifetime (1.99 μs), and zero self-absorption. The results combined with crystal structure, spectroscopy analysis, and theoretical studies reveal that a cluster-centered excited state is responsible for this yellow emission. Importantly, the structure of (C20H20P)2Cu2I4 remains unchanged even after soaking in water for 30 days or heating at 80 °C for 240 h due to the intermolecular interaction. Furthermore, a stable white LED showing a naturally correlated color temperature (CCT) of 6573 K and CIE color coordinate of (0.31, 0.37) was also demonstrated. This work demonstrates efficient light emitters based on lead-free and stable metal halides for lighting, providing an important reference for the development of stable, high-performance metal halide phosphors.
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