Abstract
In this research we study the effect of Argon Laser Irradiation and annealing on the some optical properties of SnO2 Thin film . These films were prepared by chemical spray pyrolysis method. The film thickness was 1500 A°. optical properties such as (Reflection, Energy band gab, Absorption coefficient, Refractive index, and extinction coefficient) as a function of photon energy have been studied within the wavelength range (300-900) nm, using (u v-visible) Spectrophotometer, before and after irradiation and annealing. it is found that the optical properties were change .
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