摘要
以Li_2CO_3、Nb_2O_5、TiO_2和Eu_2O_3为原料,采用固相法制备Eu^(3+)掺杂的5Li_2CO_3-1Nb_2O_5-5TiO_2(LNT)发光介质陶瓷。通过密度、XRD和荧光光谱测试,对0.2%(质量分数)Eu_2O_3掺杂的陶瓷片进行性能表征。结果表明:1120℃烧结致密的陶瓷片,其晶相结构为'M-相'与Li_2TiO_3两相复合构成;在400nm的近紫外光激发下,样品有较强的橙光(592nm)和红光(615nm)发射,分别属于Eu^(3+)的5D0→7F_1的磁偶极跃迁和5D0→7F_2的电偶极跃迁。
Eu-doped 5 Li2O-1 Nb2 05-5 TiO2 （LNT） luminescent dielectric ceramics were synthesized by solid state reaction method with Li2CO3, Nb205, TiO2 and Eu203 as raw materials. The proper- ties of LNT： 0.2% Eu^3＋ （mass fraction）ceramics were characterized by density test, X-ray diffraction （XRD） and photoluminescence spectroscopy, respectively. The XRD results show that the ceramics sintered at 1 120 ℃ consist of ＇M-phase＇ and Li2TiO3 solid solution, no other miscellaneous phase. Under 400 nm excitation, strong red-orange luminescence can be observed. The red emission at 615 nm belonging to 5D0→7F2 transition is an electric dipole transition, while the orange emission at 592 nm corresponding to 5D0→7F1 transition is a typical magnetic dipole allowed transition.
作者
王飞
周志勇
曾群
周鹤
姚春凤
WANG Fei ZHOU Zhi-yong ZENG Qun ZHOU He YAO Chun-feng(Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectronic Science and Engineering, South China Normal University, Guaagzhou 510006, China Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences, Shanghai 200050, China Research Resources Center, South China Normal University, Guangzhou 510006, China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2017年第3期269-273,共5页
Chinese Journal of Luminescence
基金
广州市珠江科技新星项目(201506010001)
中国科学院无机功能材料与器件重点实验室开放课题(KLIFMD-2015-03)
华南师范大学研究生科研创新基金(2015lkxm16
2016lkxm63)资助项目~~
关键词
固相法
Eu^3＋掺杂
发射光谱
激发光谱
solid state reaction method
Eu-doped
emission spectrum
excitation spectrum
