Physical Characterization of sprayed nanostructured Fe2O3 thin films with Tin-doped Prepared by Spray Pyrolysis Method

Abstract

The Spray Pyrolysis Method (SPM) was utilized to make thin films of nanostructured Fe2O3 and nanostructured Tin-doped Fe2O3 with a volumetric concentration of 0.01%. (2 and 4. percent). The strongest peak, as determined by X-ray diffraction, corresponds to the (200). The average particle size values in the AFM imaging for the deposited films decreased from 58.46 nm to 31.13 nm, revealing a smooth surface morphology. The average roughness was also observed to drop from 9.29 nm to 4.68 nm. Roughness ratings range from 16.70 nm to 3.66 nm. The strain decreases from 26.64 to 23.68.  We determined optical characteristics such as transmittance and optical constants using a UV-Visible spectrophotometer. For Tin Undoped Fe2O3 and 3 percent Sn doping, the optical transmittance is outstanding, with 80 and 75 percent in the visible zone. It was also discovered that as the concentration of Tin dopant was raised, the absorption coefficient increased. The Fe2O3 bandgap was reduced from 2.71 eV for Fe2O3 to 2.54 eV for Fe2O3: 4 % Sn film.