Hydrothermal synthesis and characterization of nanocrystalline Gd2Sn2O7:Eu3+ phosphors

被引：7
作者：
Yang, Jinyu [1 ,2 ]
Su, Yuchang [2 ]
Chen, Zhuo [1 ]
Liu, Xueying [2 ,3 ]
机构：
[1] Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang 550001, Peoples R China
[2] Cent South Univ Technol, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
[3] Guangxi Univ Technol, Dept Sci & Technol, Guangzhou 545006, Guangdong, Peoples R China
来源：
ADVANCED MATERIALS, PTS 1-4 | 2011年 / 239-242卷
关键词：
pyrochlore; gadolinium stannate; photoluminescence; hydrothermal synthesis; PYROCHLORES; EU3+;
D O I：
10.4028/www.scientific.net/AMR.239-242.2851
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Phase-pure Eu3+ doped Gd2Sn2O7 nanocrystals have been successfully synthesized via a co-precipitation processes combined with hydrothermal treatment. The crystal structure, particle size, morphologies, composition, and photoluminescence properties of the as-synthesized products were investigated by XRD, SEM, TEM, EDS and PL. The samples were single-phase cubic pyrochlore-type nanocrystals with a typical size of about 30 - 60 nm. All the samples exhibited irregular flower like secondary nanostructure assembled by primary nanoparticles. Photoluminescence properties of Gd2Sn2O7:Eu3+ were investigated, and the results revealed that the as-synthesized materials displayed intense and prevailing emission located at 580 - 630 nm. The excitation spectra indicated that an energy transfer from Gd3+ to Eu3+ occurred. Meanwhile, the concentration quenching phenomenon was observed in Gd2Sn2O7:Eu3+ nanocrystals.
引用
收藏
页码：2851 / +
页数：2
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