Li^+掺杂对Ba(Mg 1/3 Nb 2/3)O 3∶Er^3+荧光粉上转换发光性能的影响  

Effect of Li^+Doping on Up-Conversion Luminescence Properties of Ba(Mg1/3 Nb2/3)O3∶Er^3+Phosphors

作　　者：程园园 沈杰[1] 胡丽娜 张威 蔡辉 周静[1] CHENG Yuanyuan;SHEN Jie;HU Lina;ZHANG Wei;CAI Hui;ZHOU Jing(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Unit 96901 of the People’s Liberation Army of China,Beijing 100089,China)

机构地区：[1]武汉理工大学材料科学与工程学院,材料复合新技术国家重点实验室,武汉430070 [2]中国人民解放军96901部队,北京100089

出　　处：《硅酸盐通报》2020年第10期3353-3358,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51572205);教育部装备预研联合基金(6141A02022262);中央高校基础研究经费(2018III019,2019IVA108,2019-zy-007)。

摘　　要：采用溶胶凝胶法制备Li^+掺杂Ba(Mg 1/3 Nb 2/3)O 3∶Er^3+荧光粉,研究了碱金属离子掺杂对Ba(Mg 1/3 Nb 2/3)O 3∶Er^3+荧光粉物相结构及发光特性的影响。结果表明:Li^+的引入弥补了空位缺陷,提高了稀土离子之间的能量传递效率;同时降低结构对称性,提高Er^3+的4 f能级跃迁概率;并且提高了荧光粉的结晶度。Li^+掺杂提高了Ba(Mg 1/3 Nb 2/3)O 3∶Er^3+荧光粉的上转换发光强度,当Li^+掺杂浓度为3%(摩尔分数)时,上转换发光强度最高增强了4倍。Ba(Mg 1/3 Nb 2/3)O 3(BMN)∶Er^3+,Li^+phosphors were prepared by sol-gel method.The effects of alkali metal ion doping on the phase structure and luminescence properties of BMN∶Er^3+phosphors were studied.The results show that the introduction of Li^+eliminates the vacancy defect and improves the energy transfer efficiency.In the meantime,the structure symmetry decreases,and the transition probability of Er^3+4 f energy level increases.The crystallinity of phosphors is also improved by the Li^+doping.The introduction of Li^+improves the up-conversion luminescence intensity of BMN∶Er^3+phosphors.When the doping concentration of Li^+is 3%(mole fraction),the up-conversion luminescence intensity increases by 4 times.

关 键 词：荧光粉 碱金属 空位缺陷 结构对称性 上转换发光强度 

分 类 号：TN383[电子电信—物理电子学]