Influence of Eu, Dy co-doped strontium aluminate composition on mechanoluminescence intensity

被引：84

作者：

Akiyama, M ^{[1
]}

Xu, CN ^{[1
]}

Liu, Y ^{[1
]}

Nonaka, K ^{[1
]}

Watanabe, T ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Inst Struct & Engn Mat, Tosu, Saga 8410052, Japan

来源：

JOURNAL OF LUMINESCENCE | 2002年 / 97卷 / 01期

关键词：

mechanoluminescence; strontium aluminate; dislocation movement; stiffness;

D O I：

10.1016/S0022-2313(01)00419-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated the mechanoluminescence (ML) of Eu,Dy co-doped strontium aluminates. The SrAl2O4 and Sr3Al2O6 indicate high ML intensity, which is clearly visible to the naked eye in the air. SrAl2O4:Eu,Dy shows the highest ML intensity and has many filled traps, high quantum efficiency and moderate stiffness. On the other hand, Sr3Al2O6:Eu,Dy does not have many filled traps and high relative quantum efficiency, but Sr3Al2O6:Eu,Dy shows relatively high ML intensity. Sr3Al2O6:Eu,Dy indicates low stiffness. SrAl4O7:Eu,Dy has many filled traps and high relative quantum efficiency, but SrAl4O7:Eu,Dy shows very small ml intensity, SrAl4O7:Eu,Dy indicates high stiffness. This suggests that the stiffness is an important factor for the ML intensity of the Eu,Dy co-doped strontium aluminate system. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：13 / 18

页数：6