Kinetics of luminescence decay in electron-irradiated sapphire crystals

被引：2

作者：

Caulfield, KJ ^{[1
]}

Cooper, R ^{[1
]}

Boas, JF ^{[1
]}

机构：

[1] AUSTRALIAN RADIAT LAB,YALLAMBIE,VIC 3085,AUSTRALIA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 30期

关键词：

D O I：

10.1088/0953-8984/9/30/014

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The kinetics of luminescence decay in electron-irradiated sapphire (alpha-Al2O3) single crystals have been investigated using time-resolved luminescence spectroscopy. The data, observed over timescales from tens of nanoseconds to tens of milliseconds, characteristically feature a rapid decay of intensity punctuated by discrete plateau regions. Simple theoretical models, invoking such theories as first- or second-order mechanisms, rate laws or power-law dependences, are unable to explain these features. A theoretical model comprising bimolecular electron-hole recombination, together with unimolecular electron detrapping from two discrete traps, qualitatively accounts for these features.

引用

页码：6457 / 6465

页数：9

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