INVESTIGATION OF THE EFFECT OF FILM THICKNESS ON THE OPTICAL PROPERTIES OF AMORPHOUS Se85-XTe15SbX THIN FILMS

Authors

  • Austine Mulama Department of Physics, University of Nairobi, Department of Physics and Materials Science, Maseno University
  • Julius Mwabora Department of Physics, University of Nairobi
  • Andrew Oduor Department of Physics and Materials Science, Maseno University
  • Cosmas Muiva Department of Physics, Botswana International University of Science and Technology
  • Boniface Muthoka Department of Physics, University of Nairobi

Keywords:

Alloy, Amorphous Chalcogenide, Film Thickness, Optical Property

Abstract

Amorphous thin films of Se85-xTe15Sbx (x = 0.0, 0.5, 2.5, and 5.0 at. %) deposited by flash evaporation technique, have been investigated in the wavelength range of 500nm-3000nm. It is found that the effect of increasing antimony content and film thickness on the as-deposited films led to increase in the absorption coefficient. The optical band gap energy decreased with increase in antimony concentration but increased with increase in film thickness.

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Published

2014-07-31

Issue

Vol. 1 (2014): AFRICA JOURNAL OF PHYSICAL SCIENCES

Section

Articles