期刊
JOURNAL OF LUMINESCENCE
卷 129, 期 12, 页码 1945-1947出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2009.05.022
关键词
Layered compounds; Intercalation; Luminescence; Bound excitons
类别
Due to their layered structure, 2H layered transition metal dichalcogenide indirect bandgap compounds MoS2, WS2 can be intercalated with foreign atoms and molecules. The 2H-MoS2, 2H-WS2 and 2H-WSe2 crystals intercalated with halogen molecules at low temperatures exhibit a strong luminescence due to the bound excitons recombination. In this work, the results of comparative study of the excitonic luminescence kinetics for 2H-WS2 center dot Br-2 and 2H-MoS2:Cl-2 single crystals are presented. A simple kinetic model describing the temperature dependencies of the steady-state luminescence intensity and of the radiative decay time is proposed The lifetimes of the excitonic levels and the activation energy of the excitonic luminescence quenching caused by an extrinsic self-trapping process for both studied compounds were determined. (C) 2009 Elsevier B.V. All rights reserved
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据