Thermally stimulated current observation of trapping centers in an undoped Tl4Ga3InSe8 layered single crystal


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GASANLY N. M. , Mogaddam N. A. P. , OZKAN H.

CRYSTAL RESEARCH AND TECHNOLOGY, vol.41, no.11, pp.1100-1105, 2006 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 11
  • Publication Date: 2006
  • Doi Number: 10.1002/crat.200610729
  • Title of Journal : CRYSTAL RESEARCH AND TECHNOLOGY
  • Page Numbers: pp.1100-1105

Abstract

Thermally stimulated current measurements are carried out on as-grown Tl4Ga3InSe8 layered single crystal in the temperature range 10-160 K with different heating rates. Experimental evidence is found for two shallow trapping centers in Tl4Ga3InSe8. They are located at 17 and 27 meV. The trap parameters have been determined by various methods of analysis, and they agree well with each other. It is concluded that in these centers retrapping is negligible, as confirmed by the good agreement between the experimental results and the theoretical predictions of the model that assumes slow retrapping. (C) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.