Enhanced luminescence properties and energy transfer in novel Ce3+ and Tb3+ co-doped Na3La2(BO3)3 green-emitting phosphor

被引：25
|
作者：
Yang, Ming [1 ]
Liu, Li [1 ]
Chen, Feng [1 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 88卷
关键词：
Luminescence; Phosphors; Na3La2(BO3)(3); Energy transfer;
D O I：
10.1016/j.matlet.2012.07.105
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel Ce3+ and Tb3+ co-doped Na3La2(BO3)(3) phosphor, synthesized by a solid state reaction in reductive atmosphere, exhibits enriched emission spectrum in the green region from 480 to 650 nm corresponding to a resonant energy transfer from the Ce3+ (5d) level to Tb3+ (D-5(3)) level. The phase characterizations and luminescence properties of the phosphor were studied. The energy transfer mechanism has been demonstrated to be an electric dipole-dipole interaction. The experimental result shows that the optimum Ce3+ and Tb3+ doping concentrations are 15 at% and 10 at% respectively. The novel phosphor shows remarkable CIE chromaticity coordinates, indicating its potential application of green-emitting phosphor in white light-emitting diodes (w-LEDs). (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：116 / 118
页数：3
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