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Solution composition and temperature impact on physicochemical properties of synthesized zinc oxide

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Abstract

Nanoparticles and deposited zinc oxide layers were successfully obtained using the polymer precursor method. Glycerol or ethylene glycol with and without the addition of citric acid were used as the main precursor component. Powders and deposited oxide layers were obtained after annealing at 400 and 600 ℃. The properties of the obtained ZnO were investigated using various spectral and physicochemical methods. The effect of polymer precursor solution composition and synthesis temperature on various properties was analyzed. The formation of highly crystalline zinc oxide was confirmed by XRD, as well as the effect of the composition and annealing temperature on the particle size, optical and electrical properties. The synthesized powders contained crystallites ranging in size from 12.3 to 42 nm. FTIR spectra showed the presence of small amounts of organic contaminants in the powders when using polymer precursor formulations without citric acid, even when annealed at 600 ℃. The obtained deposited zinc oxide films analyzed by SEM and AFM showed the formation of granular porous structures as well as zinc oxide characteristic nanocolumns and nanorods with mean grain size values from 50 to 213 nm and RMS surface roughness values from 8.62 nm to 48.33 nm. The electrical characteristics of the powders depended on the size of crystallites and the presence of impurities, the presence of photosensitivity in varying degrees was registered in all obtained samples. The results demonstrate possible ways to obtain a variety of zinc oxide structures with different properties and suggest applications in various semiconductor sensing applications.

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Funding

We thank the Ministry of Education and Science of Ukraine for the program “Joint Ukraine-Indian Republic R&D Projects” within which the work was done (registration number of the project M/54-2021).

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Correspondence to Michael Tereshkov.

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Tereshkov, M., Dontsova, T., Yanushevska, O. et al. Solution composition and temperature impact on physicochemical properties of synthesized zinc oxide. Appl Nanosci 12, 2523–2532 (2022). https://doi.org/10.1007/s13204-022-02558-8

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  • DOI: https://doi.org/10.1007/s13204-022-02558-8

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