摘要
研究了碲酸盐玻璃中Eu3+离子掺杂浓度对其发光性质的影响.分别用TU-1901UV-VIS紫外可见光谱仪和F-2500荧光光谱仪测量样品的吸收光谱和发射光谱与激发光谱.结果表明:Eu-O电荷迁移带的强度与Eu3+离子掺杂浓度密切相关;相对于基质吸收,Eu3+离子的本征吸收强度随掺杂离子浓度的提高而增强;在394nm光的激发下,Eu3+离子发光主要位于594nm和615nm左右,相对于5 D0→7F1,5 D0→7F2跃迁发射受Eu3+离子掺杂浓度的影响;样品的声子边带与掺杂浓度有关.
The effect of Eu3＋ ions concentration on the optical properties of TeO2-BaO-Eu2O3 glass was studied.The absorption intensity of the charge-transfer band was observed as a function of Eu3＋ ions concentration.The absorption intensity relative to that of the host increased with the increase of the Eu3＋ ions concentration.The strong emission peaks lied in 594 and 615 nm under 394 nm excitation for all the samples.The emission intensity of 5D0→ 7F2 transition changed with Eu3＋ ion concentration with respect to that of 5D0→ 7F1 transition.Phonon sidebands were related to the doped concentration of the samples.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第12期73-76,共4页
Journal of Hunan University:Natural Sciences
基金
国家"863"计划资助项目(2006AA035Z17)
湖南大学青年成长计划基金(531107040231)
关键词
发光
浓度
掺杂
Eu3+离子
声子边带
luminescence
concentration
doped
Eu3＋ ions
phonon sideband.
