Uniform Ln(3+) (Eu3+, Tb3+) doped NaLa(WO4)(2) nanocrystals: Synthesis, characterization, and optical properties

作者：Gu Jun; Zhu Yongchun; Li Haibo; Zhang Xianwen; Qian Yitai^*

来源：Journal of Solid State Chemistry, 2010, 183(3): 497-503.

DOI：10.1016/j.jssc.2009.12.019

• Alkali rare earth tungstate
• Crystal growth
• Phosphor
• Photoluminescence

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 n

• 出版日期2010-3
• 单位中国科学技术大学