UFAS1 PLATFORM EVENTS, International Conference on Materials Science ICMS2018

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Characterization and deposition of sprayed cupric oxide (CuO) thin film and their sensing application
Meryem Lamri Zeggar

Last modified: 2018-07-22

Abstract


Recently cupric oxide (CuO) thin films have attracted much interest as a promising material for photovoltaic, monoxide and dioxide sensor gas and photocatalysis applications [1-3]. The present work deals with CuO thin films deposition by a simple and easy technique such as ultrasonic spray pyrolysis and the investigation of the influence of deposition parameters on films structural, optical and electrical properties. A set of CuO thin films were deposited at different substrates with temperatures in the large of 280-350°C using a precursor solution formed with the dissolution of copper salt in distilled water. The structural proprieties were characterized by mean X-ray diffraction (XRD). The optical properties were studied by mean of UV–visible and near-infrared spectroscopy. The conductivity was measured by the electrical D.C transport. XRD studies demonstrated the formation of pure CuO films. The optical transmittance spectra show a high absorption in the visible region. The electrical conductivity rise with an increase of substrates temperature. We have reported the dynamic sensing behaviour of the CuO sensor towards methanol gas. The sensor was tested at operation temperature equal to 50°C and for methanol concentrations of 300 ppm. The fabricated CuO based sensor exhibit high sensor response and low operation temperature which are very promising agreements for industrial applications.