• Oxide films of copper prepared by the oxidation of copper sulphide films

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      https://www.ias.ac.in/article/fulltext/pram/042/01/0041-0047

    • Keywords

       

      Thin films; optical properties; oxidation; high temperature treatment

    • Abstract

       

      Copper sulphide films prepared by reactive evaporation, when heated in air at 500 K, oxidized to Cu2O after a series of intermediate chemical transitions. Golden yellow coloured Cu2O films showed a large absorption before the fundamental absorption edge. The optical band gap was found to be (2.29±0.02)eV. When these Cu2O films were further heated they got converted to CuO and the optical band gap was found to be (2.17±0.02)eV.

    • Author Affiliations

       

      K S Joseph1 B Pradeep1

      1. Solid State Physics Laboratory, Department of Physics, Cochin University of Science and Technology, Cochin - 682 022, India
    • Dates

       
  • Pramana – Journal of Physics | News

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