锑
荧光粉
材料科学
卤化物
锌
红外线的
无机化学
光电子学
纳米技术
冶金
光学
化学
物理
作者
Tao Huang,ZiXuan Wang,Tongzhou Li,Xiaodong Shen,Weizheng Liang,Quan Niu,Xianci Zhong,Bingsuo Zou
标识
DOI:10.1021/acsami.4c04622
摘要
Metal halide-based broadband near-infrared (NIR) luminescent materials face problems such as complicated preparation, high cost, low photoluminescence quantum yield, and high excitation energy. Here, incorporating Sb3+ and Br– into (C20H20P)2ZnCl4 crystals allowed for the achievement of efficient broadband near-infrared emission under 400 nm excitation while maintaining satisfactory environmental and thermal stability. The compounds exhibit a broad range of emission bands from 550 to 1050 nm, with a photoluminescence quantum yield of 93.57%. This is a groundbreaking achievement for organic–inorganic hybrid metal halide NIR luminescent materials. The near-infrared emission is suggested to originate from [SbX5]2–, as supported by the femtosecond transient absorption spectra and density-functional theory calculations. This phosphor-based NIR LEDs successfully demonstrate potential applications in night vision, medical imaging, information encryption, and anticounterfeiting.
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