人工晶体学报2018，Vol.47Issue(4)：784-789,821,7.
水热法制备PEG-400辅助下的Bi3+敏化NaLa(WO4)2:Eu3+荧光粉及其发光性能研究
Preparation and Luminescence Properties of Bi3+Sensitized NaLa(WO4)2:Eu3+Phosphors by Hydrothermal Method Assisted by PEG-400
摘要
Abstract
Red NaLa(WO4)2:Eu3+-Bi3+phosphors were synthesized by hydrothermal method assisted by PEG-400.The microstructure, morphology, and luminescence performance of the samples were characterized by XRD, SEM, EDS, and fluorescenceas analysis.The results indicate that the powders has always been pure phase at the pH value from 7.0 to 10.0.Highly uniform monodisperse square shaped crystallites with the size ranged from 5-6 μm were prepared under the condition of 5mol%Eu3 +-doped.The formation of the products tend to have a spherical growth when the incorporation of Bi 3+increased;Meanwhile,the emission spectrum excited by λex=396 nm shows that the powders display strong red luminescence and Eu 3 +occupy noninversional central position in NaLa(WO4)2crystal lattice. The optimum amount of Bi 3 +is 0.8mol%and the luminous intensity of Eu 3+increased nearly 4.2 times. To continue to increase the doping content of Bi 3+will lead to concentration quenching and the cascade energy transfer mechanism of the bismuth ion bridge:WO2-4 →Bi3+→Eu3+is also studied.关键词
NaLa(WO4)2:Eu3+-Bi3+荧光粉/水热法/发光/浓度猝灭Key words
NaLa(WO4)2:Eu3+-Bi3 +phosphor/hydrothermal method/luminescence/concentration quenching分类
数理科学引用本文复制引用
丁益,张波,张奇才,任启芳,陈少华,童斌..水热法制备PEG-400辅助下的Bi3+敏化NaLa(WO4)2:Eu3+荧光粉及其发光性能研究[J].人工晶体学报,2018,47(4):784-789,821,7.基金项目
国家自然科学基金(21201004) （21201004）
安徽省2014高校优秀青年人才支持计划重点项目 （）
