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Analysis of Structural, Optical and Electronic Properties of Polymeric Nanocomposites/Silicon Carbide for Humidity Sensors

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Abstract

The nanocomposites are really promising for industrial, environmental and medical applications. In this work, new types of nanocomposites have been prepared from (PVA–TiO2) nanocomposites doped by SiC nanoparticles for humidity sensor with high sensitivity, flexible, high corrosion resistance and low cost. The experimental and theoretical studies on structural and optical properties of (PVA–TiO2–SiC) nanocomposites have been investigated. The optical microscope and FTIR studies were examined. The optical properties of nanocomposites were examined in wavelength range (220–800) nm. The results showed that the optical absorbance of (PVA–TiO2) nanocomposites increases with increasing of the SiC nanoparticles concentrations. The energy band gap of (PVA–TiO2) nanocomposites decreases while the optical constants increase with the increase in SiC nanoparticles concentrations. The (PVA–TiO2–SiC) nanocomposites tested for humidity sensors at relative humidity range (40–80) RH.%. The experimental results showed that the electrical resistance for (PVA–TiO2–SiC) nanocomposites decreases with increase in relative humidity. The (PVA–TiO2–SiC) nanocomposites have highly sensitivity for relative humidity.

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Acknowledgements

The authors thank the University of Babylon-Iraq (College of Education for Pure Sciences, Department of Physics and College of Science, Department of Physics).

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Authors and Affiliations

  1. Department of Physics, College of Education for Pure Sciences, University of Babylon, Hillah, Iraq

    Hind Ahmed & Ahmed Hashim

  2. Department of Physics, College of Science, University of Babylon, Hillah, Iraq

    Hayder M. Abduljalil

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  1. Hind Ahmed
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Correspondence to Ahmed Hashim.

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Ahmed, H., Abduljalil, H.M. & Hashim, A. Analysis of Structural, Optical and Electronic Properties of Polymeric Nanocomposites/Silicon Carbide for Humidity Sensors. Trans. Electr. Electron. Mater. 20, 206–217 (2019). https://doi.org/10.1007/s42341-019-00100-2

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