Sr_(6)Lu_(2)Al_(4)O_(15):Tb^(3+)荧光粉的发光特性  

Photoluminescence Properties of Sr_(6)Lu_(2)Al_(4)O_(15)∶Tb^(3+)Phosphor

作　　者：李敏 孙晓园 范小暄 刘椿淼 娄文静 田宛鹭 李昊翔 骆永石[2] LI Min;SUN Xiaoyuan;FAN Xiaoxuan;LIU Chunmiao;LOU Wenjing;TIAN Wanlu;LI Haoxiang;LUO Yongshi(Department of Physics,Changchun Normal University,Changchun 130032,China;State Key Laboratory of Luminescence and Applications,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]长春师范大学物理学院,吉林长春130032 [2]中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室,吉林长春130033

出　　处：《发光学报》2023年第11期1940-1949,共10页Chinese Journal of Luminescence

基　　金：吉林省科技发展计划(YDZJ202101ZYTS176)。

摘　　要：采用高温固相法制备了颜色可调的Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)荧光粉,并研究了其晶体结构、发光特性和浓度猝灭机理。研究了Tb^(3+)浓度对样品发光性质的影响。在紫外光激发下,当x=0.01时,Tb^(3+)的5D3-7F6跃迁强度最强,峰值位于381nm;当x=0.15时,Tb^(3+)的5D4-7F5跃迁强度最强,峰值位于545nm。随着Tb^(3+)掺杂浓度的升高,样品的发光颜色从蓝光变为黄绿光。分析了Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)荧光粉的浓度猝灭机理。测量了荧光粉的荧光寿命、热稳定性、量子效率。结果表明,Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)是一种新型的发光颜色可调的荧光粉。The phosphors Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)were synthesized through the solid-state reaction technique.The structure,photoluminescence properties and concentration quenching mechanisms were researched.The depen⁃dence of photoluminescence intensities on Tb^(3+)concentration was studied.Upon excitation with UV excitation,when the doping concentration x=0.01,the strongest peak located around 381 nm,which arise from 5D3-7F6 transition of Tb^(3+);when the doping concentration x=0.15,the strongest peak located around 545 nm,which arise from 5D4-7F5 transition of Tb^(3+).The luminescence color changes from blue to yellowish green by adjusting the doping concentration of Tb^(3+).The concentration quenching mechanisms of Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)were studied.The lifetime,thermal sta⁃bility and quantum efficiency were measured.The Sr_(6)Lu_(2-2x)Al_(4)O_(15)∶xTb^(3+)phosphor is a novel color-tunable phosphor.

关 键 词：荧光粉 光致发光 颜色可调 Tb^(3+)掺杂 

分 类 号：O482.31[理学—固体物理]