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Influence of powerful laser irradiation on impurity-defect structure of CdTe detector material

✍ Scribed by A. Medvid’; D.V. Korbutyak; S.G. Krylyuk; Yu.V. Kryuchenko; E.I. Kuznetsov; I.M. Kupchak; L.L. Fedorenko; P. Hlidek

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
279 KB
Volume
531
Category
Article
ISSN
0168-9002

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✦ Synopsis

Photoluminescence spectra of CdTe:Cl crystals were measured at 5 K before and after irradiation by the second harmonic of a YAG:Nd laser. It was found that the Huang-Rhys factor for donor-acceptor pair (DAP) recombination increases after irradiation with laser power above the CdTe melting point which is explained by a decrease of the DAP concentration due to Cd evaporation and to the presence of the thermogradient effect.

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