Color-tunable LaCaAl3O7:Ce3+,Tb3+ phosphors for UV light-emitting diodes

被引：24
|
作者：
Shi, Yurong [1 ]
Zhu, Ge [1 ]
Mikami, Masayoshi [2 ]
Shimomura, Yasuo [2 ]
Wang, Yuhua [1 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China
[2] Mitsubishi Chem Grp Sci & Technol Res Ctr, Yokohama, Kanagawa 2278502, Japan
来源：
MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 01期
基金：
美国国家科学基金会;
关键词：
Optical materials; Luminescence; Optical properties; ENERGY-TRANSFER; LUMINESCENT PROPERTIES; LEDS; MN2+;
D O I：
10.1016/j.materresbull.2012.10.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Color tunable LaCaAl3O7:0.05Ce(3+),yTb(3+) (LCA:0.05Ce(3+),yTb(3+)) phosphors were synthesized by solid state reaction. The luminescence spectra and the lifetime were investigated in detail. Results confirm that Tb3+ can substitute all La3+ sites without impure phase, and cause luminescence spectra shifting to longer wavelength. Besides, an efficient energy transfer with efficiency over 80% from Ce3+ to Tb3+ was found in the LCA host. Through this efficient energy transfer process, the hues of obtained phosphors changed from blue-white to green light. The results demonstrate its potential of applying in white light-emitting diodes. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：114 / 117
页数：4
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