Nb^(5+)、Sm^(3+)共掺杂YTaO_(4)的长余辉发光性质  

Long-lasting Phosphorescence in Nb^(5+)and Sm^(3+)Codoped YTaO_(4)

作　　者：王洪杰[1] 韩蒙 朱重阳 张粟[2] 庞然[2] 姜丽宏[2] 李成宇[2] WANG Hong-jie;HAN Meng;ZHU Chong-yang;ZHANG Su;PANG Ran;JIANG Li-hong;LI Cheng-yu(School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China;State Key Laboratory of Rare Resource Utilization, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China)

机构地区：[1]吉林建筑大学材料学院,吉林长春130018 [2]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,吉林长春130022

出　　处：《发光学报》2021年第1期1-9,共9页Chinese Journal of Luminescence

基　　金：国家重点研发计划(2019YFA0709102);中国科学院青年创新促进会(2017272)资助项目。

摘　　要：采用高温固相法合成了Nb^(5+)、Sm^(3+)共掺杂YTaO_(4)长余辉发光材料,通过X射线粉末衍射(XRD)、稳态荧光光谱、漫反射光谱和热释光曲线等多种表征手段研究了材料的结构、荧光和长余辉发光特性。XRD结果表明,共掺杂Nb^(5+)和Sm^(3+)没有引起YTaO_(4)晶体结构的改变。光谱分析表明,共掺Nb^(5+)不仅可大幅提高YTaO_(4)中Sm^(3+)的长余辉发光强度,而且可实现长余辉发光颜色的调控。对Sm^(3+)和Nb^(5+)共掺杂调控长余辉发光特性的机理也进行了分析。The Y_(0.98)Sm_(0.02)TaO_(4) long lasting phosphorescence(LLP)material was synthesized by high temperature solid state reaction,and the co-doping experiment of replacing Ta5+with Nb^(5+)was also carried out.The results of X-ray powder diffraction spectra shown that the doped ions did not change the crystal structure of YTaO_(4).Through room temperature steady-state photoluminescence(PL)and long-lasting phosphorescence experiments,it is found that the addition of Nb^(5+)can greatly increase the intensity of long-lasting phosphorescence of Sm^(3+)in YTaO_(4)and change the emission color of PL and LLP.In this paper,the properties and mechanism of PL and LLP of YTaO_(4)∶Sm^(3+),Nb^(5+)are studied,respectively.

关 键 词：过渡金属复合氧化物 长余辉 Nb^(5+) Ta^(5+) 颜色可调 

分 类 号：O482.31[理学—固体物理] O616[理学—物理]