Title of article
Influence of annealing medium on photoluminescence and optical properties of ZnSe:Cr crystals
Author/Authors
G. Colibaba، نويسنده , , M. Caraman، نويسنده , , I. Evtodiev، نويسنده , , S. Evtodiev، نويسنده , , E. Goncearenco، نويسنده , , D. Nedeoglo، نويسنده , , N. Nedeoglo، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
7
From page
237
To page
243
Abstract
Modification of photoluminescence (PL) and optical properties of ZnSe:Cr crystals caused by annealing in medium of Zn or Se vapors are investigated. Possibility to modify the intensity of infrared (IR) impurity PL (∼1 µm and 2 µm) and optical absorption spectra by several orders of magnitude, reversibility of the observed modifications of crystal properties, influence of co-doping with Cr and Cl impurities on radiative and optical properties of ZnSe are discussed. Models that explain both disappearance of image centers responsible for the IR emission due to crystal enrichment with Zn and formation of Cr2Se3 precipitates against the background of crystal enrichment with Se are suggested. Complex PL bands in the IR and edge spectral ranges are analyzed for ZnSe:Cr crystals.
Keywords
ZnSe , Photoluminescence , Transmission spectra , Cr impurity , Annealing
Journal title
Journal of Luminescence
Serial Year
2014
Journal title
Journal of Luminescence
Record number
1263254
Link To Document