Visualization of stress distribution using mechanoluminescence from Sr3Al2O6:Eu and the nature of the luminescence mechanism

被引：48

作者：

Akiyama, M ^{[1
]}

Xu, CN ^{[1
]}

Taira, M ^{[1
]}

Nonaka, K ^{[1
]}

Watanabe, T ^{[1
]}

机构：

[1] Kyushu Natl Ind Res Inst, Saga 8410052, Japan

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1999年 / 79卷 / 09期

关键词：

D O I：

10.1080/095008399176797

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the dependence of the mechanoluminescence intensity from Sr(3)A1(2)O(6) : Eu on compressive stress. The distribution of the mechanoluminescence intensity, which is clearly visible to the naked eye, is consistent with the calculated stress distribution. The luminescence centre has been identified as the Eu2+ ion from spectra of the mechanoluminescence and also from photoluminescence studies of Sr(3)A1(2)O(6) : EU The mechanoluminescence intensity decreases on repetitive application of stress but recovers completely on irradiation with ultraviolet light. The Sr3A1206 : EU is a p-type semiconductor and has hole traps of depth 0.11 eV. It is suggested that the mechanoluminescence mechanism arises from the movement of dislocations and recombination between electrons and holes released from these traps which are associated with EU2+ centres.

引用

页码：735 / 740

页数：6

共 24 条

[1] Intense visible light emission from Sr3Al2O6:Eu,Dy [J].