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

被引：25

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.

引用

页码：114 / 117

页数：4

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