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

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    • 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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      Posted on July 25, 2019

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