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International Journal of Thin Film Science and Technology

International Journal of Thin Film Science and Technology

Abstract

Biphasic nanocomposites consisting of tin oxide (SnO) are of great interest to the research community due to their potential use in various optoelectronic devices. In this paper, SnO and SnO/Zn nanostructures were explored using spray pyrolysis techniques. Diffractometric and spectrometric methods were employed to examine the optical characteristics and elemental composition of the deposited thin films. The XRD data showed that the deposited thin films were polycrystalline. The diffractograms of biphasic films of SnO/ZnS showed lower intensity compared to uncoated SnO samples, regardless of the substrate temperature. The absorbance of SnO thin films varied between 0.10 and 0.7 at different substrate temperatures, while the absorbance of biphasic films of SnO/ZnS changed depending on the substrate temperature. The reflectance spectra of SnO films showed fluctuations between maxima and minima, whereas biphasic films had low reflectance. The band gap of biphasic films was between 1.30 eV and 1.10 eV for different substrate temperatures, indicating their suitability for use due to the rise in SnO/ZnS bandgap. The extinction coefficient (k) of SnO films increased with increasing substrate temperature, while biphasic films showed a significant reduction in magnitude, irrespective of the substrate temperature. The refractive index of the film samples was generally low, regardless of the substrate temperature. The study discussed the potential applications of the thin films and found good agreement with experimental data.

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