Photoinduced Phenomena in Thermally Evaporated a-Gex Se90-x Sb10 Thin Films

• DOI: 10.15377/2409-5826.2015.02.02.3
• Publication Date: 2016-07-21T10:10:01Z
• Authors: MA Osman; AM Abosehly; AA Othman; KA Aly
• Keywords: Molar absorptivity; Vacuum evaporation

Amorphous Gex Se90-x Sb10 thin films were prepared by thermal evaporation under vacuum onto glass substrates. Reflectance and transmittance measured in the wavelength range 190-900nm. The optical properties of as deposited UV-irradiated at different exposure times reported. compositional dependence constants (absorption coefficient, non-direct gap Eg, refractive index (n), extinction coefficient (k) evaluated discussed terms Ge content chemical bond network model.