Preparation and luminescent characteristics of Eu3+-activated MgxZn1-xGa2O4 nanocrystals

被引：16

作者：

Tsai, BS ^{[1
]}

Chang, YH ^{[1
]}

Chen, YC ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 407卷 / 1-2期

关键词：

luminescence; phosphors; sol-gel synthesis;

D O I：

10.1016/j.jallcom.2005.06.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanometer-scale Eu-doped MgxZn1-xGa2O4 phosphorpowders have been synthesized by sol-gel process. The crystallization behaviors were investigated as well as the excitation and photoluminescence spectra employed to study the luminescence properties of Eu3+ in Mg-Zn mixed gallate. The grain size gradually decreases from 32.5 to 8.6 nm as Mg content increases. The excitation spectrum varies with the composition and consists of a weak charge transfer band and intense f-f transitions. Under the excitation at 394nm, the Eu-doped MgxZn1-xGa2O4 phosphors display strong red luminescence at about 612nm belonging to D-5(0) -> F-7(2) electric dipole transition. Both the emission intensity and life-time increase with the arising concentration of Mg. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：289 / 293

页数：5

共 29 条

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