Tricolor luminescence in rare earth doped CaZrO3 perovskite oxides

被引：65

作者：

Shimizu, Yuhei ^{[1
]}

Sakagami, Sho ^{[1
]}

Goto, Katsuhiko ^{[1
]}

Nakachi, Yutaka ^{[1
]}

Ueda, Kazushige ^{[1
]}

机构：

[1] Kyushu Inst Technol, Dept Mat Sci, Fac Engn, Fukuoka 8048550, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2009年 / 161卷 / 1-3期

关键词：

Photoluminescence; Phosphor; Perovskite; CaZrO3; Rare earth; PHOTOLUMINESCENCE PROPERTIES; STANNATES;

D O I：

10.1016/j.mseb.2008.11.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Intense tricolor photoluminescence under ultraviolet excitation was observed from Eu-Mg codoped CaZrO3 and Tb-Mg codoped CaZrO3. The RGB tricolor was obtained from a single host lattice of perovskite-type CaZrO3 by just varying a doped rare earth ion and its concentration. Red luminescence was observed in Eu-Mg codoped CaZrO3, and green and blue luminescence was observed in Tb-Mg codoped CaZrO3, The color of the luminescence in Tb-Mg codoped CaZrO3 changed with Tb concentration due to the cross relaxation in Tb ions; green color was seen at high concentration and blue color at low concentration. In comparison with other perovskite host lattices, these zirconates showed more intense luminescence than hafnates and stannates. In addition, Mg codoping with the rare earth ions markedly increased the luminescence intensity. It is considered that the intense luminescence in the zirconates is attributed to the large crystal structural distortion of CaZrO3 and the local lattice distortion around the rare earth ions enhanced by Mg substitution at Ca sites. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：100 / 103

页数：4

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