Luminescence properties of core-shell structured SiO2@CaMoO4:Eu3+ phosphor

被引：24

作者：

Ju, Xiaoxia ^{[1
]}

Li, Xueming ^{[1
]}

Yang, Yuling ^{[1
]}

Li, Wulin ^{[2
]}

Tao, Chuanyi ^{[2
]}

Feng, Wenlin ^{[1
,3
,4
]}

机构：

[1] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Key Lab Optoelect Technol & Syst, Minist Educ, Coll Optoelect Engn, Chongqing 400044, Peoples R China

[3] Chongqing Univ Technol, Dept Appl Phys, Chongqing 400054, Peoples R China

[4] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2012年 / 187卷

基金：

美国国家科学基金会;

关键词：

CaMoO4:Eu3+; SiO2; Sol-gel method; Luminescence; EU3+; REDUCTION; EU2+; AIR; SUBSTITUTION; UNIFORM; IONS;

D O I：

10.1016/j.jssc.2011.12.042

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Uniform SiO2@CaMoO4:Eu3+ red phosphor has been synthesized by sol-gel method, and its luminescence properties have been studied by fluorescence spectrometer. The structure and morphology of the SiO2@CaMoO4:Eu3+ red phosphor have been investigated by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and FT-IR spectrometer. Results indicate that phosphor particles have a core-shell structure and the thickness of the SiO2-shell is about 60 nm. In addition, the luminescent intensity of SiO2@CaMoO4:Eu3+ red phosphor has been greatly enhanced with respect to CaMoO4:Eu3+ phosphor. But the lifetime tau value of SiO2-coated CaMoO4:Eu3+ is slightly smaller than that of non-coated CaMoO4:Eu3+. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：109 / 113

页数：5

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