Electron traps in Tb3+-doped CaAl2O4

被引：51

作者：

Jia, D

Wang, XJ ^{[1
]}

Yen, WM

机构：

[1] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

[2] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 363卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(02)01170-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Tb3+-doped CaAl2O4 samples were prepared and studied. The D-5(3,4) to F-7(J) (J = 6, 5, 4,...) afterglow emissions of Tb3+ with a persistence time of 1 h are observed. Photoconductivity experiment determined that the ground state of Tb3+ is 0.4 eV above the top of the CaAl2O4 valence band. Two thermoluminescence peaks (-3 and 114 degreesC) and two thermal stimulated current peaks (-5 and 119 degreesC) were also detected. The results indicated that the traps at -3 degreesC (1.08 eV) are close to Tb3+ emission centers, while the traps at 114 degreesC (0.66 eV) are far away from the centers. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：241 / 244

页数：4

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