Transient luminescence line shapes for Mn2+ ions in ZnS nanocrystals

被引：23

作者：

Anderson, FG ^{[2
]}

Dennis, WM

Imbusch, GF

机构：

[1] Natl Univ Ireland Univ Coll Galway, Dept Expt Phys, Galway, Ireland

[2] Univ Vermont, Dept Phys, Burlington, VT 05405 USA

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

来源：

JOURNAL OF LUMINESCENCE | 2000年 / 90卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

nanocrystals; ZnS : Mn; hot luminescence; approach to equilibrium;

D O I：

10.1016/S0022-2313(99)00610-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recent time-resolved luminescence spectra reported by Yu et al. from ZnS:Mn nanocrystals embedded in a polymer matrix showed the presence of two emission bands that merge into a single band as time passed following an intense laser excitation pulse. We have calculated the bandshapes as a function of time assuming a nonequilibrium initial distribution for the excited vibrational states. Our calculated bandshapes fit quite well to those observed experimentally and support the explanation given by Yu et al. This would seem to be an ideal system in which to study the approach to thermal equilibrium in nanocrystals. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：27 / 32

页数：6

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