磷光
荧光粉
材料科学
发光
光电子学
持续发光
紫外线
可见光谱
波长
发光测量
荧光
光化学
光学
化学
物理
热释光
作者
Long Gu,Huifang Shi,Lifang Bian,Mingxing Gu,Kun Ling,Xuan Wang,Huili Ma,Suzhi Cai,Wei‐Hua Ning,Lishun Fu,He Wang,Shan Wang,Yaru Gao,Wei Yao,Fengwei Huo,Youtian Tao,Zhongfu An,Xiaogang Liu,Wei Huang
出处
期刊:Nature Photonics
[Nature Portfolio]
日期:2019-04-08
卷期号:13 (6): 406-411
被引量:723
标识
DOI:10.1038/s41566-019-0408-4
摘要
Materials exhibiting long-lived, persistent luminescence in the visible spectrum are useful for applications in the display, information encryption and bioimaging sectors1–4. Herein, we report the development of several organic phosphors that provide colour-tunable, ultra-long organic phosphorescence (UOP). The emission colour can be tuned by varying the excitation wavelength, allowing dynamic colour tuning from the violet to the green part of the visible spectrum. Our experimental data reveal that these organic phosphors can have an ultra-long lifetime of 2.45 s and a maximum phosphorescence efficiency of 31.2%. Furthermore, we demonstrate the applications of colour-tunable UOP for use in a multicolour display and visual sensing of ultraviolet light in the range from 300 to 360 nm. The findings open the opportunity for the development of smart luminescent materials and sensors with dynamically controlled phosphorescence. Organic phosphors with ultra-long lifetimes and an emission colour that can be tuned by the excitation wavelength are reported.
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