Dispersion Parameters of PVA-PAAm-Sb2O3 Nanocomposites Prepared by Casting Solution Method

In this study, several optical and structural properties of polymers were investigated to determine how antimony trioxide Sb2O3 addition affected them. Several films have been produced for this purpose by adding Sb2O3 to polymers at varying concentrations using the casting procedure. Between 200 and 1100 nm, the transmittance and absorbance spectra were analyzed. All of the properties of the indirect allowed transition have been calculated, including its absorption, extinction, index of refraction, real and imaginary dielectric constants, and energy gap. Since the absorption coefficient was less than 104 cm-1, the experimental results indicated that electronic transitions could occur indirectly. Increasing the Sb2O3 concentration increased the index of refraction and extinction coefficient. Similar energy gaps were predicted by the Tauc and Wemple-DiDomenico models.