Enhanced long persistence of LiSr4(BO3)3:Eu2+ orange phosphors by co-doping with Dy3+

被引：19
|
作者：
Li, Gen [1 ]
Wang, Yuhua [1 ]
Zeng, Wei [1 ]
Han, Shaochun [1 ]
Chen, Wenbo [1 ]
Li, Yanyari [1 ]
Li, Hao [1 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China
来源：
OPTICAL MATERIALS | 2014年 / 36卷 / 11期
基金：
美国国家科学基金会;
关键词：
LiSr4(BO3)(3); Afterglow; Thermoluminescence; Dy3+; LASTING PHOSPHORESCENCE; LUMINESCENCE; ALUMINATE; SR; LN;
D O I：
10.1016/j.optmat.2014.02.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel orange emitting long-lasting phosphor based on LiSr4(BO3)(3) host matrix was prepared by a solid-state reaction under a reductive atmosphere. Both diffuse reflectance spectra and photoluminescence emission spectra of the Eu2+-doped and Eu2+, Dy3+ co-doped samples revealed only the 5d-4f transitions of Eu2+. The broad emission band of Eu2+ appeared to be asymmetric, which illustrated only Eu2+ acted as the emission center in two different Sr sites. The duration of co-doped samples was prolonged drastically, compared with that of the Eu2+ single-doped samples. Investigation of thermoluminescence curves revealed that the incorporation of Dy3+ created more appropriate energy traps leading to the enhancement of afterglow. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：1808 / 1813
页数：6
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