Photoluminescence characteristics of Cd1-xMnxTe single crystals grown by the vertical Bridgman method.

Content Provider	Europe PMC
Author	Hwang, Younghun Um, Youngho Park, Hyoyeol
Copyright Year	2012
Abstract	In this paper, we report a systematic investigation of band-edge photoluminescence for Cd1-xMnxTe crystals grown by the vertical Bridgman method. The near-band-edge emissions of neutral acceptor-bound excitons (labeled as L1) were systematically investigated as a function of temperature and of alloy composition. The parameters that describe the temperature variation of the energy were evaluated by the semiempirical Varshni relation. From the temperature dependence of the full width at half maximum of the L1 emission line, the broadening factors Γ(T) were determined from the fit to the data. The activation energies of thermal quenching were obtained for the L1 peak from the temperature dependence of the bound exciton peaks and were found to decrease with increasing Mn concentration.
ISSN	19317573
Journal	Nanoscale Research Letters
Volume Number	7
PubMed Central reference number	PMC3275455
Issue Number	1
PubMed reference number	22221510
e-ISSN	1556276X
DOI	10.1186/1556-276x-7-36
Language	English
Publisher	Springer
Publisher Date	2012-01-05
Access Restriction	Open
Rights License	This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Copyright ©2012 Hwang et al; licensee Springer.
Subject Keyword	Cd1-xMnxTe Bridgman method PL exciton broadening thermal quenching
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Materials Science