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Properties of electrochemically deposited CdTe thin films: annealing effect

  • M. R. AsabeEmail author
  • V. P. Ubale
  • A. H. Manikshete
  • V. T. Vader
  • S. V. Rajmane
  • S. D. Delekar
Article

Abstract

CdTe thin film have been deposited onto stainless steel and fluorine doped tin oxide coated glass substrates from aqueous acidic bath using electrodeposition technique. The different preparative parameters, such as deposition time, bath temperature, pH of the bath have been optimized by photoelectrochemical (PEC) technique get good quality photosensitive material. The deposited films are annealed at different temperature in presence of air. Annealing temperature is also optimized by PEC technique. The film annealed at 200 °C showed maximum photosensitivity. Different techniques have been used to characterize the as deposited and also annealed (at 200 °C) CdTe thin film. The X-ray diffraction (XRD) analysis showed the polycrystalline nature and a significant increase in the XRD peak intensities is observed for the CdTe films after annealing. Optical absorption shows the presence of direct transition with band gap energy 1.64 eV and after annealing it decreases to 1.50 eV. Energy dispersive analysis by X-ray study for the as-deposited and annealed films showed nearly stoichiometric compound formation. Scanning electron microscopy reveals that spherically shaped grains are more uniformly distributed over the surface of the substrate for the annealed CdTe film. Photovoltaic output characteristics and spectral response of the annealed film have been carried. The fill factor and power conversion efficiency (η) of the cell are found to be 71 and 3.89 %.

Keywords

Power Conversion Efficiency Annealed Film CdTe Film Optical Absorption Study CdTe 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 2013

Authors and Affiliations

  • M. R. Asabe
    • 1
    Email author
  • V. P. Ubale
    • 2
  • A. H. Manikshete
    • 1
  • V. T. Vader
    • 1
  • S. V. Rajmane
    • 2
  • S. D. Delekar
    • 3
  1. 1.Department of ChemistryWalchand College of Arts and ScienceSolapurIndia
  2. 2.Department of ChemistryD.B.F. Dayanand College of Arts and ScienceSolapurIndia
  3. 3.Department of ChemistryShivaji UniversityKolhapurIndia

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