Hydrothermal synthesis of Y2O3 coated Y2O3:Eu3+ nanotubes for enhanced photoluminescence properties

被引：6
作者：
Gao, Linhui [1 ]
Wang, Guangfa [2 ]
Zhu, Hongliang [1 ]
Zhou, Weijie [1 ]
Ou, Guofu [1 ]
机构：
[1] Zhejiang Sci Tech Univ, Fac Mech Engn & Automat, Dept Mat Forming & Control Engn, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Sci Tech Univ, Coll Mat & Text, Hangzhou 310018, Zhejiang, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2015年 / 70卷
关键词：
Nanostructure; Surfaces; Luminescence; Chemical synthesis; Phosphors; YTTRIUM-HYDROXIDE; PHOSPHORS; LUMINESCENCE;
D O I：
10.1016/j.materresbull.2015.06.013
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel Y2O3 coated Y2O3:Eu3+ nanotubes with different coating ratios were synthesized successfully by a facile two-step process, including hydrothermal synthesis of Y(OH)(3) coated Y(OH)(3):Eu3+ as precursors and then calcination of them at 1000 degrees C for 2 h. X-ray diffraction patterns and field emission scanning electron microscope images indicated these Y2O3 coated Y2O3:Eu3+ phosphors possess tubular nanostructures. The photoluminescence properties of Y2O3 coated Y2O3:Eu3+ were systematically investigated by photoluminescence spectra, and photoluminescence enhancement was observed after proper coating. In other words, the coating ratio played a crucial role in photoluminescence efficiency. When it was 1/9, the photoluminescence intensity of D-5(0) -> F-7(2) emission (about 613 urn) was 60% higher than that of Y2O3: Eu3+ phosphors under 255 nm excitation. Therefore, surface coating may be an alternative route for enhanced photoluminescence properties of the Y2O3:Eu3+ red-emitting phosphor. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：876 / 880
页数：5
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