Luminescence properties of sol-gel derived spherical SiO2@Gd2(WO4)3:Eu3+ particles with core-shell structure

被引：48

作者：

Jia, P. Y.

Liu, X. M.

Yu, M.

Luo, Y.

Fang, J.

Lin, J.

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

[3] Univ New Orleans, Dept Chem, New Orleans, LA 70148 USA

[4] Univ New Orleans, Adv Mat Res Inst, New Orleans, LA 70148 USA

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 424卷 / 4-6期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1016/j.cplett.2006.04.088

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Monodisperse, core-shell structured SiO2@Gd-2(WO4)(3):Eu3+ particles were prepared by the sol-gel method. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy, transmission electron microscopy, photoluminescence (PL) and low-voltage cathodoluntinescence (CL). PL and CL study revealed that the core-shell structured SiO2@Gd-2(WO4)(3):Eu3+ particles show strong red emission dominated by the D-5(0)-F-7(2) transition of Eu3+ at 615 nm with a lifetime of 0.89 ins. The PL and CL emission intensity can be tuned by the coating number of Gd-2(WO4)(3):Eu3+ phosphor layers on SiO2 particles, the size of the SiO2 core particles, and by accelerating voltage and the filament current, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：358 / 363

页数：6

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