Synthesis and characterization of monodispersed BaSO4/Y2O3:Eu3+ core-shell submicrospheres

被引：17

作者：

Zhang, Ming ^{[1
]}

Li, Xinhai ^{[1
]}

Wang, Zhixing ^{[1
]}

Guo, Huajun ^{[1
]}

Li, Jinhui ^{[1
]}

Liu, Wanrong ^{[1
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China

来源：

POWDER TECHNOLOGY | 2009年 / 195卷 / 02期

关键词：

Phosphor; Y2O3:Eu3+; BaSO4; Core-shell; Coating; CORE/SHELL NANOPARTICLES; PHOTOLUMINESCENCE; SURFACE;

D O I：

10.1016/j.powtec.2009.04.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Spherical BaSO4 particles have been coated with Y2O3:Eu3+ phosphor layers (BaSO4/Y2O3:Eu3+) by the wet chemical method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dipersive spectroscopy (EDS), photoluminescence spectra were utilized to characterize the BaSO4/Y2O3:Eu3+ core-shell-structured phosphor particles. The obtained core-shell phosphors consist of well dispersed submicron spherical particles with narrow size distribution. XRD result shows that no reaction occurred between the BaSO4 cores and the Y2O3:Eu3+ shells even after annealing at 1400 degrees C. TEM and EDS results show that BaSO4 particles are well coated with the shell of Y2O3:Eu3+. The BaSO4/Y2O3:Eu3+ core-shell particles show a red emission corresponding to D-5(0)-F-7(2) of Eu3+ under the excitation of ultraviolet. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：69 / 72

页数：4

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