Dynamic studies on the time-resolved fluorescence of Sm2+ in BaCl2

被引：20

作者：

He, ZY ^{[1
]}

Wang, YS ^{[1
]}

Li, S ^{[1
]}

Xu, XR ^{[1
]}

机构：

[1] No Jiaotong Univ, Inst Optoelect Technol, Beijing 100044, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2002年 / 97卷 / 02期

基金：

中国国家自然科学基金;

关键词：

time-resolved fluorescence; electron-phonon interaction; Sm; Ba;

D O I：

10.1016/S0022-2313(01)00241-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The time dependence of Sm2+ fluorescence in orthorhombic BaCl2 was investigated between 77 and 300 K. The thermal quenching mechanism of the 4f-4f emissions Of Sm2+ was examined. The position of the lowest level of Sm2+ 4f(5)5d states was calculated from the temperature dependence of D-5(1) lifetime by the two-step quenching model and was estimated in good approximation from the emission and excitation peaks by the electron-phonon coupling theory. A growing process of D-5(0)-F-7(0) emission and a double-decay process of 5d-4f emission were observed in the time-resolved fluorescence. They show clearly the population transfer among the Sm2+ excited states via thermal transition. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：102 / 106

页数：5

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