材料科学
钙钛矿(结构)
紫外线
光电子学
激发
可视化
紫外线
聚合物
荧光
纳米技术
计算机科学
光学
化学
电气工程
复合材料
物理
工程类
人工智能
结晶学
作者
Junlu Sun,Tianshu Li,Dong Lin,Qilin Hua,Shuai Chang,Haizheng Zhong,Lijun Zhang,Chongxin Shan,Caofeng Pan
标识
DOI:10.1016/j.scib.2022.08.009
摘要
Ultraviolet (UV) visualization has extensive applications in military and civil fields such as security monitoring, space communication, and wearable equipment for health monitoring in the internet of things (IoT). Due to their remarkable optoelectronic features, perovskite materials are regarded as promising candidates for UV light detecting and imaging. Herein, we report for the first time the excitation-dependent perovskite/polymer films with dynamically tunable fluorescence ranging from green to magenta by changing the UV excitation from 260 to 380 nm. And they still render dynamic multi-color UV light imaging with different polymer matrixes, halogen ratios, and cations of perovskite materials. The mechanism of its fluorescence change is related to the chloride vacancies in perovskite materials. A patterned multi-color ultraviolet visualization pad is also demonstrated for visible conversion of the UV region. This technique may provide a universal strategy for information securities, UV visualizations, and dynamic multi-color displays in the IoT.
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