发光学报2024，Vol.45Issue(7)：1077-1085,9.DOI:10.37188/CJL.20240081
配体调控CsPbBr3/Cs4PbBr6复合薄膜的合成、发光性能及白光LED应用
Synthesis,Luminescence Properties and White Light LED Applications of Ligand-modulated CsPbBr3/Cs4 PbBr6 Composite Films
摘要
Abstract
Synthesis of all-inorganic CsPb X3(X=Cl,Br,I)perovskite nanocrystals(PNCs)typically requires high-temperature conditions and the involvement of inert gases,which severely hinders their practical application.In this work,a room-temperature method using a 2-methylimidazole ligand to regulate recrystallization was first em-ployed to successfully prepare biphase CsPbBr3/Cs4PbBr6 PNCs with superior luminescent properties.Subsequently,these nanocrystals were combined with various polymers to fabricate nanocrystal composite films.The biphase perovskite structure within the polymers was confirmed through XRD,TEM,and UV-Vis absorption spectroscopy.The CsPbBr3/Cs4PbBr6@PDMS and CsPbBr3/Cs4PbBr6@EVA composite films were identified as having excellent over-all performance,and they were encapsulated in LED devices.With dual protection from Cs4PbBr6 PNCs and the polymers,the CsPbBr3/Cs4PbBr6@PDMS exhibited a photoluminescence quantum yield(PLQY)exceeding 80%,while the water stability and air stability of CsPbBr3/Cs4PbBr6@EVA were significantly enhanced.Finally,the CsPb-Br3/Cs4PbBr6@EVA composite film was successfully applied to white LED devices,emitting standard white light with a CIE chromaticity coordinate of(0.331,0.332).关键词
配体调控/CsPbBr3/Cs4PbBr6/复合薄膜/白光LED器件Key words
ligand regulation/CsPbBr3/Cs4PbBr6/composite film/white LED device分类
数理科学引用本文复制引用
蒋东亮,张国星,朱兴华,李源,陈岩..配体调控CsPbBr3/Cs4PbBr6复合薄膜的合成、发光性能及白光LED应用[J].发光学报,2024,45(7):1077-1085,9.基金项目
广东省高校重点领域专项(2021ZDZX1022) （2021ZDZX1022）
江西省重大科技专项(20223AAE01003) （20223AAE01003）
广东省大学生创新创业训练计划项目(2022CX37) Special Projects in Key Fields of Guangdong Universities(2021ZDZX1022) （2022CX37）
Major Science and Technology Project of Jiangxi Province(20223AAE01003) （20223AAE01003）
University Students Innovation and Entrepreneurship Training Program of Guangdong Province(2022CX37) （2022CX37）
