Uniform Ln3+ (Eu3+, Tb3+) doped NaLa(WO4)2 nanocrystals: Synthesis, characterization, and optical properties

被引：42
作者：
Gu, Jun [1 ]
Zhu, Yongchun [1 ]
Li, Haibo [1 ]
Zhang, Xianwen [1 ]
Qian, Yitai [1 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefei 230026, Anhui, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2010年 / 183卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Alkali rare earth tungstate; Crystal growth; Phosphor; Photoluminescence; ETHYLENE-GLYCOL; LUMINESCENCE PROPERTIES; MEDIATED SYNTHESIS; RAMAN-SCATTERING; LASER OPERATION; PARTICLES; PHOSPHORS; SIZE; NANOPARTICLES; NAY(WO4)(2);
D O I：
10.1016/j.jssc.2009.12.019
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Uniform shuttle-like Ln(3+) (Eu3+, Tb3+) doped NaLa(WO4)(2) nanocrystals have been solvothermally synthesized, and the size of the nanocrystals could be easily controlled by adjusting the volume ratio of ethylene glycol (EG) to water Doped with 5 mol% Eu3+ and Tb3+ ions, the NaLa(WO4)(2) nanocrystals showed strong red and green emissions with lifetimes of 08 and 1 40 ms, respectively A high quenching concentration of 15 mol% was observed in Eu3+-doped NaLa(WO4)(2) nanoaystals and 35 mol% in Tb3+ -doped NaLa(WO4)(2) nanocrystals The emission intensity measurements of Eu3+ -doped NaLa(WO4)(2) with different sizes indicated that the emission intensity of shuttles with length of 300 nm in average was stronger than that of shuttles with length of 900 nm in average, but was weaker than that of needles with length of 4 and 9 mu m in average (C) 2009 Elsevier Inc. All rights reserved.
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收藏
页码：497 / 503
页数：7
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