Effects of Mn doping on the characterization of nanostructured TiO<sub>2</sub>thin films deposited via chemical spray pyrolysis method
Esraa H. Hadi, Mustafa A Abbsa, Abdulhussain A. Khadayeir, Ziad M. Abood, Nadir Fadhil Habubi, Sami Salman Chiad
Abstract
Abstract Nanostructured TiO 2 :Mn thin films at diverse concentrations of Mn were deposited via chemical spray pyrolysis method (CPM). The XRD patterns hexagonal wurtzite structure with a dominant peak towards (101) plane. The Grain size of the deposited films is about (10.71-12.71) nm with Mn, whereas the strain (%) parameter decrease from 32.34 to 27.26 with Mn. AFM images show the TiO 2 :Mn effects surface morphology of the film, The grain size was in the area of (91.13), (67.79) and (64.94) nm for the (TiO 2 , TiO 2 :2% Mn, TiO 2 :4% Mn) respectively. Surface roughness of TiO 2 Thin films are RSM 16.6 to 3.68 nm, The average transmittance of the samples was 75 to 85% in the visible wavelength range from 300 to 900 nm. The bandgap values were 3.35 eV (undoped) to 3.15 eV (4 % Mn).