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Pramana

, Volume 42, Issue 1, pp 41–47 | Cite as

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

  • K S Joseph
  • B Pradeep
Research Articles
  • 37 Downloads

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.

Keywords

Thin films optical properties oxidation high temperature treatment 

PACS Nos

78.66 81.60 

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Copyright information

© Indian Academy of Sciences 1994

Authors and Affiliations

  • K S Joseph
    • 1
  • B Pradeep
    • 1
  1. 1.Solid State Physics Laboratory, Department of PhysicsCochin University of Science and TechnologyCochinIndia

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