Thermally stimulated current analysis of Zn1-xCdxO alloy films

AYBEK A. Ş., Baysal N., ZOR M., TURAN E., KUL M.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.509, no.5, pp.2530-2534, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 509 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1016/j.jallcom.2010.11.077
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2530-2534
  • Keywords: Oxide materials, Alloy films, Thermal analysis, Trap parameters, Chemical synthesis, Electronic properties, ULTRASONIC SPRAY-PYROLYSIS, THIN-FILMS, OPTICAL-PROPERTIES, TRANSPARENT CONDUCTORS, ELECTRICAL-PROPERTIES, SINGLE-CRYSTALS, ZINC-OXIDE, ZNO, DEPOSITION, TRAP
  • Anadolu University Affiliated: Yes


We have studied the structural and electrical properties of Zn1-xCdxO alloy films deposited by ultrasonic spray pyrolysis technique. XRD measurement indicated that pure ZnO and CdO samples had single phases with hexagonal wurtzite and cubic structures, respectively. However, Zn1-xCdxO alloy films with x = 0.59 and 0.78 exhibited mixtures of a hexagonal wurtzite ZnO phase and a cubic CdO phase. Analysis of thermally stimulated current spectra of Zn1-xCdxO alloy films revealed the existence of a number of overlapped peaks each characterized by different trap energy levels located in the range of 0.033-0.215 eV below the conduction band. We have used curve fitting method for the evaluation of the trap parameters of the alloy films. The values of attempt-to-escape frequency v, capture cross-section S and concentration of the traps N-t have been determined. (C) 2010 Elsevier B.V. All rights reserved.