Luminescence and energy transfer in CaAl4O7:Tb3+, Ce3+

被引：90

作者：

Jia, DD ^{[1
]}

Zhu, J

Wu, BQ

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China

[3] Chinese Acad Sci, Changchun Inst Phys, Jilin 133001, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2001年 / 93卷 / 02期

基金：

中国国家自然科学基金;

关键词：

photoluminescence; energy transfer; sensitization; CaAl4O7 : Tb3+/Ce3+;

D O I：

10.1016/S0022-2313(01)00182-X

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Samples of CaAl4O7 doped with Tb3+, Ce3+, and Tb3+ and Ce3+, respectively are prepared by sintering. Microstructures are analyzed by X-ray diffraction and high-resolution transmission electron microscope experiments. The samples show single monoclinic phase. The blue Ce3+ emission at 440 nm is efficiently quenched in the sample of CaAl4O7:Tb3+, Ce3+, in which the dominant emission is in the green at 545 nm, originating from the transition of D-5(4) to F-7(5). Excitation spectrum of the CaAl4O7 : Tb3+, Ce3+, monitoring at 545 nm of the green emission, consists of both contributions from Ce3+ and Tb3+. 95% of total energy of Tb3+ green emission is transferred from Ce3+. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：107 / 114

页数：8

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