Elaboration and characterization of pure ZnO, Ag:ZnO and Ag-Fe:ZnO thin films: Effect of Ag and Ag-Fe doping on ZnO physical properties

Authors

  • fouaz Lekoui Centre de dévelippement des technologies avancées
  • Salim Hassani centre de développement des technologies avancées
  • Elyes Garoudja centre de développement des technologies avancées
  • Rachid Amrani University of Algiers 1
  • Walid Filali centre de développement des technologies avancées
  • Ouahid Sifi centre de développement des technologies avancées
  • Slimane Oussalah centre de développement des technologies avancées

DOI:

https://doi.org/10.31349/RevMexFis.69.051005

Keywords:

Optoelectronic properties; rapid thermal evaporation; TCO, ZnO films

Abstract

Pure ZnO, Ag doped ZnO and Ag-Fe co-doped ZnOwere preparedusing thermal evaporation.  XRD analysis confirms that all layers present a hexagonal wurtzite structure; however, there is a small shift in the peaks position due to thedistortion of the film’s lattice. Scanning Electron Microscopy (SEM) analysis reveals the morphological variation of the film’s surfaces due to the doping. Pure ZnO and Ag:ZnO films have a nanostructured surface, however, Ag-Fe:ZnO films showed a smooth surface without any nanoparticles. Raman analysis showed the presence of A1(LO), E2(high) andlocal vibrational modes (LVMs) for all layers. Ultraviolet–visible spectroscopy (UV-VIS) analysis shows that the films have a good transparency and the bandgapdecreases with ZnO doping from 3.80 eVto 3.78 eV and 3.70 eV,for pure ZnO, Ag:ZnO and Ag-Fe:ZnO films, respectively. The electrical properties confirm the semiconductor nature of ZnO films with a resistivity around 1.4 Ω.cm, and with Ag and Ag-Fe doping, the films behave like conductors with 1.4´10-4Ω.cm and 1.4´10-3Ω.cm, respectively. These results make the Ag:ZnO and Ag-Fe ZnO thin films good materials for photovoltaic application.

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Published

2023-09-01

How to Cite

[1]
fouaz Lekoui, “Elaboration and characterization of pure ZnO, Ag:ZnO and Ag-Fe:ZnO thin films: Effect of Ag and Ag-Fe doping on ZnO physical properties ”, Rev. Mex. Fís., vol. 69, no. 5 Sep-Oct, pp. 051005 1–, Sep. 2023.