Optical properties of different metal additives to GeSe amorphous films

الملخص EN

The optical properties of Se0.62Ge0.38 and Se0.62Ge0.35X0.03 where [X=In, Sb and Bi] thin films has been investigated.

Thin films used in these studies were thermally evaporated on glass substrates.

The spectral distribution and optical parameters have been investigated using spectrophotometric measurements of transmittance and reflectance in the wavelength range (400-2500nm).

The analysis of the optical absorption data indicates the existence of allowed indirect transitions.

The optical dispersion parameters Eo and Ed were determined using Wemple-Didomenico single oscillator model.

The optical constants such as optical band gap Eg opt, complex dielectric constant and dissipation factor tan (δ) were determined using Swanepole method.