Structural and Optical Characterization of Sprayed nanostructured Indium Doped Fe<sub>2</sub>O<sub>3</sub>Thin Films
Reem Sami Ali, Musaab Khudhur Mohammed, Abdulhussain A. Khadayeir, Ziad M. Abood, Nadir Fadhil Habubi, Sami Salman Chiad
Abstract
Abstract Nanostructured pure and Indium doped iron oxide thin films were deposited via spray pyrolysis technique (SPT). The effects of Indium (2 and % 4) concentration was studied. X-ray diffraction patterns disclosed that Fe 2 O 3 films have a rhombohedral crystalline of α-Fe 2 O3 phase and their crystallite size was vary from (12.13 – 13.84) nm with Indium content. The strain(%) parameter decrease from 28.57 to 25.04, AFM images of films show changes in morphology with decreased in surface roughness from 2.75 nm to 1.7 nm with Indium 4% doping, The 3-D images and grain size distribution are illustrated that they exhibit spherical nano-grains ranged from 72.72 nm for pure Indium to 51.22 nm for 4% Indium doped Fe 2 O 3 . The transmittance decreases with increasing Indium concentration. The bandgap energy of Fe 2 O 3 thin film was 2.75 eV and it decreases to 2.55 eV for Fe 2 O 3 :4% In.