Tailoring red-green-blue emission from Er3+, Eu3+ and Tb3+ doped Y2O3 nanocrystals produced via PVA-assisted sol-gel route

被引：15

作者：

Sobral, G. A. ^{[1
]}

Gomes, M. A. ^{[2
]}

Avila, J. F. M. ^{[2
]}

Rodrigues, J. J., Jr. ^{[2
]}

Macedo, Z. S. ^{[2
]}

Hickmann, J. M. ^{[3
]}

Alencar, M. A. R. C. ^{[2
]}

机构：

[1] Univ Fed Alagoas, Programa Posgrad Mat, BR-57072970 Maceio, AL, Brazil

[2] Univ Fed Sergipe, Dept Fis, Cidade Univ Prof Jose Aloisio de Campos, BR-49100000 Sao Cristovao, SE, Brazil

[3] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2016年 / 98卷

关键词：

Y2O3; nanophosphors; PVA assisted sol-gel; Frequency upconversion; Photoluminescence; White light; UP-CONVERSION LUMINESCENCE; 5D3-5D4; CROSS-RELAXATION; ENERGY-TRANSFER; YTTRIUM-OXIDE; IONS; NANOPHOSPHORS; PERFORMANCE; MECHANISMS; PHOSPHORS; POWDERS;

D O I：

10.1016/j.jpcs.2016.06.010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Y2O3 luminescent nanoparticles were synthesized via PVA-assisted sol-gel method and their structural and optical properties were investigated. Effects of rare earth (Er3+, Eu3+ and Tb3+) doping on luminescence properties of the produced nanophosphors have been investigated under NIR (800 nm) and UV (240-300 nm) excitation. Intense infrared to red and green emissions were observed and a weak blue upconverted luminescence was also detected. Moreover, it was observed that changing the doping ions, the color emitted by the samples could be modified and different combinations of UV excitation and doping produced effective white light emissions. The obtained results demonstrate that PVA-assisted sol-gel is an effective methodology for the synthesis of rare-earth doped Y2O3 nanophosphors. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：81 / 90

页数：10

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