中国光学（中英文）2024，Vol.17Issue(2)：468-480,13.DOI:10.37188/CO.EN-2023-0023
可用于近紫外LED芯片的铕-铱双金属配合物红光共聚荧光粉
A red-emitting copolymer phosphors based on bimetallic Eu-Ir complex for Near-UV chip-based LEDs
摘要
Abstract
In this paper,a new Eu-Ir bimetallic complex Eu(FIrPic)2(Phen)UA is synthesized using the Ir complex FIrPic as ligands for Eu ions and red-emitting phosphorescent copolymer PM-Eu-Ir is successfully prepared via radical polymerization for commercial near UV chip-based LEDs.The Eu3+ ions were found to be effectively sensitizable by adding Ir-complex with enhanced ultra-violet light absorption at around 400 nm without affecting the fluorescence emission characteristic of the Eu3+ ions.The proposed copolymer PM-Eu-Ir exhibits the strongest emission peak at 612 nm with the CIE coordinates(0.461,0.254)under 365 nm ultra-violet light excitation,which matches well with the 365 nm near-UV chip.The micro-morphology of the red copolymer phosphor PM-Eu-Ir is a typical multilayer spatial network structure;as well as having appreciable red emission and the corresponding fluorescence lifetime of 634.54 μs,it also has excellent thermal stability in a wide range of 25～250℃.The LEDs fabricated by the copolymer PM-Eu-Ir display red light emission with a 149800 cd/m2 luminance.The results support the potential utilization of prepared copolymer phos-phor as a red component in the fabrication of near UV chip-based white LEDs.关键词
稀土发光离子/双金属配合物/共聚型高分子荧光粉/近紫外LEDKey words
rare-earth luminescent ions/bimetallic complexes/copolymer phosphors/NUV LED chips分类
化学化工引用本文复制引用
王子豪,杨亚敏,张爱琴,贾虎生,贾静..可用于近紫外LED芯片的铕-铱双金属配合物红光共聚荧光粉[J].中国光学（中英文）,2024,17(2):468-480,13.基金项目
国家自然科学基金(No.21972103) （No.21972103）
山西浙江大学新材料与化工研究院研发项目(No.2021SX-AT010)Supported by National Natural Science Foundation of China(No.21972103) （No.2021SX-AT010）
Research and Development Project of New Materials and Chemical Engineering Research Institute of Shanxi Zhejiang University(No.2021SX-AT010) （No.2021SX-AT010）
