Studying the structural and optical properties of PVA doped with CuO and FeCL 3 composites films

Abstract EN

In this research, we are studying structural and optical properties of film (PVA doped with CuO and FeCl3).The(CuO)with concentration (7%), and (FeCl3) with different concentrations of FeCl3 (3, 7, and 9) %,preparing by casting method with thickness (25±5) μm, the structure characterized by using (XRD).The investigation of (XRD).

indicates that the pure (PVA) and doping films are polycrystalline structure.

The results of the measuring size, micro grain strain, dislocation density and number of crystals of each sample shaw that the grain size increases with increasing concentration from(3.676-11.57 )nm .

The absorbance and transmittance spectra have been recorded in the wavelength range (200-1100) nm inorder to studying the optical properties.

The optical band gap of (PVA) decreases with increasing concentration of FeCl3 from(4.3- 1.6) eV, and extinction coefficient, refraction index, the optical conductivity are varies with increasing concentration.