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Temperature dependence of the Urbach energy in ordered defect compounds Cu-III3-VI5 and Cu-III5-VI8

  • Ismardo Bonalde*
  • , Ernesto Medina
  • , S. M. Wasim
  • *Corresponding author for this work
  • Instituto Venezolano de Investigaciones Científicas
  • Universidad de los Andes Mérida

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Two previous models used with success in Cu-III-VI2 semiconductors have been employed to study the temperature dependence of the Urbach energy in ordered compounds Cu-III3-VI5 and Cu-III5-VI8. The model which contains two variable parameters seems to explain better the data over the whole temperature range studied. However, the ordered vacancy or the donor acceptor defect pair in the cation sublattice provides new features in these compounds that need further study.

Original languageEnglish
Pages (from-to)1865-1867
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume66
Issue number11
DOIs
StatePublished - Nov 2005
Externally publishedYes

Keywords

  • A. Electronic materials
  • A. Semiconductors
  • D. Defects
  • D. Optical properties

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