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Influence of Al concentration on structural and optical properties of Al-doped ZnO thin films

  • Deniz Kadir Takci
  • Ebru Senadim Tuzemen
  • Kamuran Kara
  • Sadi Yilmaz
  • Ramazan Esen
  • Ozge Baglayan
Article

Abstract

Undoped ZnO and Al-doped zinc oxide (ZnO:Al) thin films with different Al concentrations were prepared onto Si (100) substrate by pulsed filtered cathodic vacuum arc deposition system at room temperature. The influence of doping on the structural and optical properties of thin films was investigated. The preferential (002) orientation was weakened by high aluminum doping in films. Raman measurement was performed for the doping effects in the ZnO. Atomic force microscopy images revealed that the surface of undoped ZnO film grown at RT was smoother than that of the Al-doped ZnO (ZnO:Al) films. The reflectance of all films was studied as a function of wavelength using UV–Vis–NIR spectrophotometer. Average total reflectance values of about 35 % in the wavelength range of 400–800 nm were obtained. Optical band gap of the films was determined using the reflectance spectra by means of Kubelka–Munk formula. From optical properties, the band gap energy was estimated for all films.

Keywords

Transparent Conductive Oxide Munk Function Hexagonal Wurtzite Crystal Structure Transparent Conductive Oxide Thin Film Dope Zinc Oxide Thin Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Deniz Kadir Takci
    • 1
  • Ebru Senadim Tuzemen
    • 2
  • Kamuran Kara
    • 3
  • Sadi Yilmaz
    • 1
  • Ramazan Esen
    • 1
  • Ozge Baglayan
    • 4
  1. 1.Department of PhysicsCukurova UniversityAdanaTurkey
  2. 2.Department of Physics, Nanotechnology CenterCumhuriyet UniversitySivasTurkey
  3. 3.Department of PhysicsIstanbul UniversityIstanbulTurkey
  4. 4.Department of PhysicsAnadolu UniversityEskisehirTurkey

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