Synthesis-dependent luminescence properties of Y3Al5O12:Re3+ (Re=Ce, Sm, Tb) phosphors

被引：212

作者：

Zhou, YH ^{[1
]}

Lin, J ^{[1
]}

Yu, M ^{[1
]}

Wang, SB ^{[1
]}

Zhang, HJ ^{[1
]}

机构：

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

来源：

MATERIALS LETTERS | 2002年 / 56卷 / 05期

关键词：

synthesis method; Y3Al5O12; luminescence; rare earth;

D O I：

10.1016/S0167-577X(02)00567-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By using metal nitrates and oxides as the starting materials, Y2Al5O12 (YAG) and YAG:Re3+ (Re = Ce, Sm, Th) powder phosphors were prepared by solid-state (SS), coprecipitation (CP) and citrate gel (CG) methods. The resulting YAG and YAG-based phosphors were characterized by XRD, FT-IR, SEM and photoluminescent excitation and emission spectra. The purified crystalline phases of YAG were obtained at 800 degreesC (CG) and 900 degreesC (CP, SS). At an identical annealing temperature and doping concentration, the doped rare-earth ions showed the stronger emission intensity in the CP- and SS-derived phosphors than the CG-derived YAG phosphors. The poor emission intensity for the CG-derived phosphors is mainly caused by the contamination of carbon impurities from citric acid in the starting materials. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：628 / 636

页数：9

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