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Some Studies on Chemically Deposited n-PbSe Thin Films

Author Affiliations

  • 1Department of Physics, Azad College, Ausa-413520, Maharashtra, INDIA
  • 2 Thin Film Research Laboratory, Department of Physics, Rajarshi Shahu Mahavidyalaya, Latur, Maharashtra, INDIA

Res.J.chem.sci., Volume 1, Issue (9), Pages 37-41, December,18 (2011)

Abstract

Thin films of PbSe of various thicknesses have been deposited onto ultrasonically clean glass substrates using simple chemical bath deposition technique. Structural investigations on these showed polycrystalline nature of the films with the presence of cubic phases. Grain size increased with increase in thickness of the film sample. Compositional analysis revealed that films are sulphur deficient. Optical absorption studies indicated a decrease of energy band gap as thickness of film increased. The electrical conductivity and thermoelectric power (TEP) measurements have been carried out in 300-500 K temperature range. The activation energy is found to be thickness dependant. TEP measurement showed n-type conduction mechanism.

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