Red phosphorescence properties of Mn ions in MgO-GeO2 compounds

被引：61

作者：

Iwasaki, Mineto ^{[1
]}

Kim, Duk Nam ^{[2
]}

Tanaka, Keiko ^{[1
]}

Murata, Takahiro ^{[3
]}

Morinaga, Kenji ^{[3
]}

机构：

[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Appl Sci Elect & Mat, Kasuga, Fukuoka 8168580, Japan

[2] Fukuoka Ind Sci & Technol Fdn, Fukuoka 8100001, Japan

[3] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Dept Engn Sci Elect & Mat, 6-1 Kasugakouen, Kasuga, Fukuoka 8168580, Japan

来源：

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2003年 / 4卷 / 02期

基金：

日本学术振兴会;

关键词：

Red-emitting phosphor; Phosphorescence; Manganese ions; Germanate compounds; Point defect; Photo-oxidation;

D O I：

10.1016/S1468-6996(03)00025-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Red phosphorescence properties on Mn ions doped MgO-GeO2 compounds, Mg4GeO6, Mg2GeO4, and MgGeO3, were investigated. The red phosphorescence was observed in MgGeO3: Mn2+. The red phosphorescence intensity of MgGeO3: Mn2+ increased with adding the MgF2 and Yb2O3. The red phosphorescence duration time of sample with a batch composition of 44 mol%-MgO, 6 mol%-MgF2, 50 mol%-GeO2, 0.1 mol%-MnO, and 0.05 mol%-Yb2O3 is approximately 30 min. The mechanism of red phosphorescence in MgGeO3: Mn2+ is discussed in terms of the relationship between valency state of manganese ions and point defects in matrix compound. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：137 / 142

页数：6