Optical and structural properties of ZnGa2O4: Eu3+ nanophosphor by hydrothermal method

被引：26
|
作者：
Kim, Jong Su [1 ]
Kwon, Ae Kyung
Kim, Jin Su
Park, Hong Lee
Kim, Gwang Chul
do Han, Sang
机构：
[1] Pukyong Natl Univ, Div Image Informat Sci & Engn, Pusan 608739, South Korea
[2] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea
[3] Korea Univ Technol & Educ, Sch Liberal Arts, Cheonan 330708, South Korea
[4] Korea Inst Energy Res, Taejon 305343, South Korea
来源：
JOURNAL OF LUMINESCENCE | 2007年 / 122卷
关键词：
nanophosphor; hydrothermal method; ZnGa2O4 : Eu3+;
D O I：
10.1016/j.jlumin.2006.01.307
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nanophosphor of ZnGa2O4:Eu3+ was synthesized through a hydrothermal method. The particle size was about 20 nm confirmed by X-ray diffractometry and scanning electron microscopy. Excitation peaks attributed to the charge transfer of Eu-O were redshifted to longer wavelength sides. Red emission peaks originating from D-5-F-7(j) (j = 0-6) transitions of Eu3+ were split into two sub-bands, indicating that two different Eu3+ ions exist at tetrahedral Zn2+ and octahedral Ga3+ sites. Relative intensities of two sub-bands were different from those of bulk phosphor. The color purity of ZnGa2O4:Eu3+ nanophosphor is enhanced in comparison with that of bulk phosphor. Optical characteristics of ZnGa2O4:Eu3+ nanophosphor can be explained by different site occupancy of Eu3+ from ZnGa2O4:Eu3+ bulk phosphor. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：851 / 854
页数：4
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