Enhancement of luminescence efficiency of f-f transitions from Tb3+ due to energy transfer from Ce3+ in Al2O3 crystalline ceramic powders prepared by low temperature direct combustion synthesis

被引：47

作者：

Rakov, N

Maciel, GS ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[2] Univ Nacl Autonoma Mexico, Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 400卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.11.015

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：

In this Letter, we report the structural and luminescent properties of Tb:Ce:Al2O3 crystalline ceramic powders prepared through combustion synthesis at low temperature (similar to280 degreesC). The presence of Ce3+ (1.0 mol%) in the sample resulted in an enhancement of Tb3+ (1.0 mol%) overall emission intensity by a factor of similar to50. The analysis of the luminescence dynamics for the D-5(4) --> F-7(6) transition (similar to545 nm) of Tb3+ demonstrated that the mechanism responsible for the large enhancement of luminescence observed is efficient energy transfer from Ce3+ to Tb3+. (C) 2004 Elsevier B.V. All rights reserved.

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页码：553 / 557

页数：5

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