• Journal of Advanced Dielectrics
  • Vol. 14, Issue 1, 2245002 (2024)
Irina A. Gulyaeva1、*, Alexandra P. Ivanisheva1, Maria G. Volkova2, Victoria Yu. Storozhenko2, Soslan A. Khubezhov3、4, Ekaterina M. Bayan2, and Victor V. Petrov1
Author Affiliations
  • 1Research and Education Centre “Microsystem Technics and Multisensory Monitoring Systems”, Southern Federal University, Russia
  • 2Department of Chemistry, Southern Federal University, Russia
  • 3Department of Physics, North-Ossetian State University, 362025 Vladikavkaz, Russia
  • 4Department of Physics and Engineering, ITMO University, 191002 Petersburg, Russia
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    DOI: 10.1142/S2010135X22450023 Cite this Article
    Irina A. Gulyaeva, Alexandra P. Ivanisheva, Maria G. Volkova, Victoria Yu. Storozhenko, Soslan A. Khubezhov, Ekaterina M. Bayan, Victor V. Petrov. Investigation of electrophysical, photo- and gas-sensitive properties of ZnO–SnO2 sol–gel films[J]. Journal of Advanced Dielectrics, 2024, 14(1): 2245002 Copy Citation Text show less

    Abstract

    Thin nanocomposite films based on tin dioxide with a low content of zinc oxide (0.5–5mol.%) were obtained by the sol–gel method. The synthesized films are 300–600nm thick and contains pore sizes of 19–29nm. The resulting ZnO–SnO2 films were comprehensively studied by atomic force and Kelvin probe force microscopy, X-ray diffraction, scanning electron microscopy, and high-resolution X-ray photoelectron spectroscopy spectra. The photoconductivity parameters on exposure to light with a wavelength of 470nm were also studied. The study of the photosensitivity kinetics of ZnO–SnO2 films showed that the film with the Zn:Sn ratio equal to 0.5:99.5 has the minimum value of the charge carrier generation time constant. Measurements of the activation energy of the conductivity, potential barrier, and surface potential of ZnO–SnO2 films showed that these parameters have maxima at ZnO concentrations of 0.5mol.% and 1mol.%. Films with 1mol.% ZnO exhibit high response values when exposed to 5–50ppm of nitrogen dioxide at operating temperatures of 200C and 250C.
    Irina A. Gulyaeva, Alexandra P. Ivanisheva, Maria G. Volkova, Victoria Yu. Storozhenko, Soslan A. Khubezhov, Ekaterina M. Bayan, Victor V. Petrov. Investigation of electrophysical, photo- and gas-sensitive properties of ZnO–SnO2 sol–gel films[J]. Journal of Advanced Dielectrics, 2024, 14(1): 2245002
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