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Department of Physics, University of Lucknow, Lucknow (U.P.), 226007, India
Journal of Optoelectronic and Biomedical Materials 2025, 17(3),141-149; https://doi.org/10.15251/JOBM.2025.173.141
Tin oxide is a promising candidate for high-impact applications in optoelectronic devices.
The main purpose of this paper is to discuss the systematic study of the preparation of tin oxide thin film (spray pyrolysis technique) with variations at glass substrate temperatures of 325 °C, 375 °C, 425 °C. X-ray diffraction pattern reveals that SnO2 has a polycrystalline tetragonal-shaped structure with space group P42/mnm. Crystallite size, lattice parameter, and lattice strain were increased with increasing substrate temperature.
Scanning Electron Microscopy/Atomic Force Microscopy images show that cuboid- shaped particles with few pores are distributed over the surface. AFM also demonstrated the root means square roughness was varying from 0.285nm - 0.290nm. RAMAN spectroscopy identifies primarily A1g, B2g, , doubly degenerate Eg vibrational modes in thin films.
