Ionic Liquid-Based Approach to Monodisperse Luminescent LaF3:Ce,Tb Nanodiskettes: Synthesis, Structural and Photoluminescent Properties

被引：13

作者：

Guo, Hai ^{[1
,2
]}

Zhang, Tian ^{[1
,2
]}

Qiao, YanMin ^{[1
]}

Zhao, LeiHong ^{[2
]}

Li, ZhengQuan ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China

[2] Zhejiang Normal Univ, Inst Phys Chem, Zhejiang Key Lab React Chem Solid Surfaces, Jinhua 321004, Zhejiang, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 03期

关键词：

Ionic Liquids [bmim]BF4; LaF3:Ce; Tb Nanodiskettes; EDTA-2Na; UP-CONVERSION FLUORESCENCE; FACILE SYNTHESIS; CORE/SHELL NANOPARTICLES; NANOCRYSTALS; LAF3; CEF3-TB3+; EMISSION; LAPO4-CE; TB; FLUORIDES; NANOWIRES;

D O I：

10.1166/jnn.2010.2066

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, a novel and easy synthesis of highly luminescent, water-soluble LaF3:Ce,Tb nanodiskettes (25 nm in diameter) by ionic liquid-based hydrothermal process is reported. X-ray diffraction (XRD), transmission electron microscopy (TEM) and field emission scanning electron microscopy (FE-SEM) were used to characterize the structural properties of the LaF3,:Ce,Tb nanodiskettes. Ionic liquid [bmim]BF4 acts as both a co-solvent and a reactant during the synthesis. The effects of EDTA-2Na on the formation of green LaF3:Ce,Tb nanodiskette phosphors were studied and discussed. The luminescent properties of LaF3:Ce,Tb nanodiskettes have been investigated under 254 nm excitation both in solid state and dispersed in solution. The quantum efficiency (in solid state) is about 20% compared with commercial green phosphor. The photoluminescent properties show that the as-prepared La0.8Ce0.15Tb0.05F3 nanodiskettes may be applied as phosphors for high-resolution displays and fluorescent labels for biomolecules.

引用

页码：1913 / 1919

页数：7

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