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Optical and nanostructure properties of the tungsten chloride doped of vanadium oxide xerogel thin film under high temperature

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Abstract

In this work, study the influence of the thermochromic capability of tungsten-doped vanadium oxide thin film at high-treating temperature. The films were prepared by following sol–gel technique starting from the incorporation of vanadium (V) oxytripropoxide with anhydrous isopropanol. Tungsten chloride, at a concentration of 4 at %, used in the recipe as a doping material. The films deposited, on (10 × 5 × 3 mm) quartz substrate utilizing spin coating method at spinning speed of 4000 rpm. All samples were heat-treated at a rate of 1 °C/min reaching 500 °C, 1000 °C, 1500 °C and 2000 °C then kept at these temperatures for 30 min. Structural and spectral characterization, UV–VIS-NIR, SEM, and XRD examinations were used to evaluate the resultant films. The thermochromic transition temperature of the film dropped to as low as 70 °C, while the visible transmittance maintains at 75%. This intrinsically high-treating temperature process, practically, makes the tungsten-doped vanadium oxide films more potentially in thermochromic applications.

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Acknowledgements

I would like to express my gratitude to the Iraqi Ministry of Higher Education and Scientific Research for their help. I'd also want to thank AL-Karkh University of Science for their invaluable support

Funding

The current study received no financing from any public, commercial, or non-profit sources. As a result, its personal effort and statement of interests are entirely mine, and its support has been subjective during the three years of research.

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  1. Department Medical Physics, College of Science, AL-Karkh University of Science, Baghdad, Iraq

    Ashraf M. Alattar

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Correspondence to Ashraf M. Alattar.

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Alattar, A.M. Optical and nanostructure properties of the tungsten chloride doped of vanadium oxide xerogel thin film under high temperature. J Opt 52, 424–430 (2023). https://doi.org/10.1007/s12596-022-00905-0

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