Optical constants of Zinc sulphide ZnS thin films for different annealing temperature

الملخص EN

Zinc sulphide ZnS thin films were prepared by the spray pyrolysis (SP) technique on glass substrates at different temperatures (450, 500,550 and 600°C).

Transmittance and absorbance measurements in the wavelength range (200–1000 nm) were used to calculate the refractive index n and the extinction coefficient k.

The optical band gap ERgR (optical conductivity σRoptR, complex dielectric constant εR1R, εR2R, εR∞R, relaxation time τ, average interband oscillator wave length λRoR average oscillator strength SRoR, N / m*(N the free charge carrier concentration, m* the effective mass of the free charge carrier) and dissipation factor tanδ were determined.

The analysis of the optical absorption data indicates that the optical band gap was indirect transitions.

According to Wemple and Didomenico method, the optical dispersion parameters ERoR and ERdR were determined.