Highly luminescent and stable lead-free cesium copper halide perovskite powders for UV-pumped phosphor-converted light-emitting diodes

作     者：LINGLING XIE BINGKUN CHEN FA ZHANG ZHENG ZHAO XINXIN WANG LIJIE SHI YUE LIU LINGLING HUANG RUIBIN LIU BINGSUO ZOU YONGTIAN WANG 

作者机构：Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic SystemsSchool of PhysicsBejing Institute of TechnologyBeijing 100081China Bejjing Engineering Research Center of Mixed Reality and Advanced DisplaySchool of Optics and PhotonicsBejjing Institute of TechnologyBejjing 100081China AICFVE of Bejing Film AcademyBejing 100088China 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2020年第8卷第6期

页      面：768-775页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：National Key R&D Program of China(2017YFB1002900) National Natural Science Foundation of China(51602024,61420106014,61574017,61775019) Beijing Nova Program(Z171100001117047) Bejing Outstanding Young Scientist Program(BJJWZYJH01201910007022) Opened Fund of the State Key Laboratory on Integrated.Optoelectronics(IOSKL2017KF13) 

主　　题：stability. perovskite converted 

摘      要：Lead halide perovskites have drawn extensive attention over recent decades owing to their outstanding photo-electric ***,their toxicity and instability are big issues that need to be solved for further ***,we adopt a facile dry ball milling method to synthesize lead-free Cs3Cu2X5(X=I,CI)perovskites with photoluminescence(PL)quantum yield up to 60%.The optical features including broad emission spectrum,large Stokes shift,and long PL lifetime can be attributed to self-trapped exciton *** as-synthesized blue emissive Cs3Cu2I5 and green emissive Cs3Cu2Cl5 lead-free perovskite powders have good thermal stability and ***,UV-pumped phosphor-converted light-emitting diodes were obtained by using Cs3Cu2I5 and Cs3Cu2Cl5 as phosphors.