Effect of microwave irradiation on the photoluminescence of bound excitons in CdTe:Cl single crystals

The effect of microwave radiation on the transformation of impurity-based structural complexes in Cd Te :Cl single crystals is studied using low-temperature photoluminescence measurements. It is shown that microwave radiation activates Cl Te centers, resulting in an increase in the intensity of phot...

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Bibliographic Details
Published in:Semiconductors (Woodbury, N.Y.) N.Y.), 2011-09, Vol.45 (9), p.1133-1139
Main Authors: Korbutyak, D. V., Lotsko, A. P., Vakhnyak, N. D., Demchuna, L. A., Konakova, R. V., Milenin, V. V., Red’ko, R. A.
Format: Article
Language:English
Subjects:
CADMIUM TELLURIDES
COMPLEXES
EXCITONS
IMPURITIES
Interaction with Radiation
IRRADIATION
Magnetic Materials
Magnetism
MATERIALS SCIENCE
MICROWAVE RADIATION
MONOCRYSTALS
Nuclear radiation
PHOTOLUMINESCENCE
Physics
Physics and Astronomy
Spectroscopy
Toy industry
TRANSFORMATIONS
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Summary:The effect of microwave radiation on the transformation of impurity-based structural complexes in Cd Te :Cl single crystals is studied using low-temperature photoluminescence measurements. It is shown that microwave radiation activates Cl Te centers, resulting in an increase in the intensity of photoluminescence line of excitons bound at the corresponding Cl Te donor centers. A nonmonotonic dependence of the integrated photoluminescence intensity on the duration of microwave irradiation is observed. At the initial stage of microwave irradiation ( t = 30 s), an increase in the integrated excitonic photoluminescence intensity is observed; as the duration of microwave irradiation is increased, the photoluminescence intensity decreases. The experimentally observed variations in the photoluminescence intensity are athermal in nature. The hypothetical mechanism of transformation of impurity-based structural complexes is described.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782611090119