广州化学2026，Vol.51Issue(3)：43-47,5.DOI:10.16560/j.cnki.gzhx.20252681
Li8CaLa2Ta2O13:Sm3+荧光粉的可调发光和能量转移
Tunable Luminescence and Energy Transfer of Li8CaLa2Ta2O13:Sm3+Phosphors
摘要
Abstract
A novel tantalate phosphor with a garnet-like structure,Li8CaLa2(1-x)Ta2O13:xSm3+(LCLTO:xSm3+),was synthesized via a high-temperature solid-state reaction.The crystal structures were confirmed by XRD and EDS,and the luminescence properties of the synthesized samples were investigated using fluorescence spectroscopy.The results revealed that under 234 nm excitation,an energy transfer process existed from the host to Sm3+ion,which allows for tunable color emission from blue to pink by regulating the doping concentration of Sm3+ions.The optimal sample of LCLTO:0.06Sm3+exhibited orange-red light with the highest emission peak at 614 nm(4G5/2→6H7/2)when excited at 406 nm,which is anticipated to be utilized for near-UV excited white LED.关键词
Li8CaLa2Ta2O13/Sm3+掺杂/荧光粉/浓度猝灭/能量转移Key words
Li8CaLa2Ta2O13/Sm3+doping/phosphor/concentration quenching/energy transfer分类
数理科学引用本文复制引用
何嘉欣,曾帆,赵兵,茹晶晶,王冰燕..Li8CaLa2Ta2O13:Sm3+荧光粉的可调发光和能量转移[J].广州化学,2026,51(3):43-47,5.基金项目
福建省大学生创新创业项目(S202510398017) （S202510398017）
宁德师范学院校级科研项目(2024Y18,2023T03,2024ZX44) （2024Y18,2023T03,2024ZX44）
