Excitation-dependent perovskite/polymer films for ultraviolet visualization  

基于激发依赖性钙钛矿/聚合物薄膜的紫外可视化研究

作　　者：Junlu Sun Tianshu Li Lin Dong Qilin Hua Shuai Chang Haizheng Zhong Lijun Zhang Chongxin Shan Caofeng Pan 孙俊璐;李天姝;董林;化麒麟;常帅;钟海政;张立军;单崇新;潘曹峰(CAS Center for Excellence in Nanoscience,Beijing Key Laboratory of Micro-nano Energy and Sensor,Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 100083,China;Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics(Ministry of Education),School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China;State Key Laboratory of Integrated Optoelectronics,Key Laboratory of Automobile Materials(Ministry of Education),College of Materials Science and Engineering,Jilin University,Changchun 130012,China;MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices,School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]CAS Center for Excellence in Nanoscience,Beijing Key Laboratory of Micro-nano Energy and Sensor,Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Beijing 100083,China [2]Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Materials Physics(Ministry of Education),School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China [3]State Key Laboratory of Integrated Optoelectronics,Key Laboratory of Automobile Materials(Ministry of Education),College of Materials Science and Engineering,Jilin University,Changchun 130012,China [4]MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices,School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Science Bulletin》2022年第17期1755-1762,共8页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(52125205,11974317,11674290,U20A20166,U1704138,52192614,61805015,and 61804011);the National Key R&D Program of China(2021YFB3200302 and 2021YFB3200304);Natural Science Foundation of Beijing Municipality(Z180011 and 2222088);Shenzhen Science and Technology Program(KQTD20170810105439418);the Fundamental Research Funds for the Central Universities;Henan Science Fund for Distinguished Young Scholars(212300410020);Key Project of Henan Higher Education(21A140001);the Zhengzhou University Physics Discipline Improvement Program。

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 excitationdependent 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 multicolor 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.紫外可视化技术在安全监控、空间通信、物联网健康监测可穿戴设备等领域有着广泛的应用.由于其显著的光电特性,钙钛矿材料被认为是有前途的紫外光探测和成像的候选者.本文报道了具有激发依赖特性的钙钬矿/聚合物薄膜,通过改变紫外激发波长(260~380 nm)实现了从绿色到品红的动态可调荧光显示.通过探究不同聚合物基质、卤素比例和钙钛矿材料的阳离子对动态的多色紫外可视化的影响和理论计算,结果表明其荧光变化机理与钙钛矿材料中的氯空位有关.该钙钛矿/聚合物薄膜还可以通过丝网印刷工艺实现紫外可视化的图案化多色显示.该技术可能应用于物联网的信息安全、紫外可视化和动态多色显示.

关 键 词：Excitation-dependent Perovskite/polymer hybrids Chloride vacancy Ultraviolet visualization 

分 类 号：R318[医药卫生—生物医学工程]