Sol-gel synthesis and photoluminescence properties of BaSO4/Y2O3:Eu3+ core-shell submicrospheres

被引：0

作者：

Zhang Ming ^{[1
]}

Li Xinhai ^{[1
]}

Wang Zhixing ^{[1
]}

Hu Qiyang ^{[1
]}

Li Jinhui ^{[1
]}

Liu Wanrong ^{[1
]}

机构：

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

来源：

JOURNAL OF RARE EARTHS | 2009年 / 27卷 / 06期

关键词：

phosphor; sol-gel; core-shell; photoluminescence; rare earths; PARTICLES;

D O I：

10.1016/S1002-0721(08)60356-7

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Europium-doped nanocrystalline Y2O3 phosphor layers were coated on the surface of preformed submicron BaSO4 spheres via the sol-gel process. The obtained BaSO4/Y2O3:Eu3+ core-shell phosphors were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS) and photoluminescence spectra. The results showed that the obtained BaSO4/Y2O3:Eu3+ core-shell phosphors consisted of well-dispersed submicron spherical particles with narrow size distribution and non-agglomeration. TEM and EDS results showed that BaSO4 particles were well coated with the shell of Y2O3 :Eu3+. XRD result demonstrated that no reaction occurred between the BaSO4 cores and the Y2O3:Eu3+ shells even after annealing at 1200 degrees C. The BaSO4/Y2O3:Eu3+ core-shell particles showed a red emission corresponding to D-5(0)-F-7(2) of Eu3+ under the excitation of ultraviolet.

引用

页码：891 / 894

页数：4

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