Effect of Manganese Oxide Doping of Tin Oxide Thin Films on the Optical and Structural Properties

Sara S.  Mahmood; Bushra A.  Hasan; Aws F.  Rauuf

doi:10.24996/ijs.2024.65.7.16

Authors

Sara S. Mahmood Renewable directorate, ministry of science and technology, Baghdad, Iraq
Bushra A. Hasan Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq https://orcid.org/0000-0003-4711-7276
Aws F. Rauuf Material directorate, ministry of science and technology, Baghdad, Iraq

DOI:

https://doi.org/10.24996/ijs.2024.65.7.16

Keywords:

pulse laser deposition, tin oxide, Optical properties

Abstract

Tin oxide pure and manganese oxide doped (SnO₂:Mn₂O₃) films were grown on a glass substrate in vacuum by pulsed laser deposition (PLD) technique (using Nd: YAG Laser) at different ratios of Mn₂O₃ (0, 3, 5, 7, 9) % wt. The structural and optical properties were studied. The X-ray diffraction (XRD) studies showed the structure nature of the films to be polycrystalline and rutile tetragonal. The optical transmittance spectra and optical constants of the prepared thin films, such as extinction coefficient (k), refractive index (n), and real (ε_r) and imaginary parts (ε_i) of the dielectric constant, were investigated. The values of the energy band gap increased from 3.5 eV to 3.55 eV with increasing the doping concentration.