AC-conductivity of carbon nanotubes  / WS2 nanotubes hybrid films

Authors

  • Vitaly K. Ksenevich Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Nikolay I. Gorbachuk Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Ho Viet Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus
  • Mikhail V. Shuba Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus
  • Alesia G. Paddubskaya Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus
  • Dzmitry I. Yuko Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus

Keywords:

hybrid films, carbon nanotubes, tungsten disulfide nanotubes, electrical conductivity, impedance spectroscopy
Supporting Agencies
Authors would like to acknowledge R. Tenne (Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, Israel) and A. Zak (Department of Sciences, Holon Institute of Technology, Holon, Israel) for fabrication of tungsten disulfide nanotubes and A. D. Wieck (Department of Physics and Astronomy, Bochum Ruhr- University, Bochum, Germany) for possibility of implementation of low temperature impedance measurements.

Abstract

AC-conductivity of hybrid films consisting of carbon nanotubes and inorganic tungsten disulfide nanotubes with different ratios of the organic and inorganic components has been investigated over the frequency range 100 Hz – 1 MHz at temperatures 4.2; 77; 300 K. It has been found that an active (resistive) part of the impedance of these hybrid films is significantly greater than the reactive part at 77 and 300 K. The increasing contribution of a reactive (capacitive type) part of the impedance is observed at 4.2 K and is more obvious in the high frequency range and at the increasing content of WS2 nanotubes in the hybrid films. The equivalent circuit characterizing low-temperature conductivity of hybrid films with regard to the influence of contact barriers between low-ohmic carbon nanotubes is suggested.

Author Biographies

  • Vitaly K. Ksenevich, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    PhD (physics and mathematics); head of the research laboratory of physics of electronic materials, department of semiconductor physics and nanoelectronics, faculty of physics

  • Nikolay I. Gorbachuk, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    PhD (physics and mathematics), docent; associate professor at the department of semiconductor physics and nanoelectronics, faculty of physics

  • Ho Viet, Belarusian State University, Niezaliežnasci Avenue, 4, 220030, Minsk, Belarus

    postgraduate student at the department of semiconductor physics and nanoelectronics, faculty of physics

  • Mikhail V. Shuba, Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus

    PhD (physics and mathematics); leading researcher at the laboratory of nanoelectromagnetism

  • Alesia G. Paddubskaya, Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus

    researcher at the laboratory of nanoelectromagnetism

  • Dzmitry I. Yuko, Research Institute for Nuclear Problems, Belarusian State University, Babrujskaja Street, 11, 220030, Minsk, Belarus

    junior researcher at the laboratory of nanoelectromagnetism

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Published

2017-09-29

Issue

No. 3 (2017): Journal of the Belarusian State University. Physics

Section

Physics of Nanostructures

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How to Cite

(1)
Ksenevich, V. K.; Gorbachuk, N. I.; Viet, H. .; Shuba, M. V.; Paddubskaya, A. G.; Yuko, D. I. AC-Conductivity of Carbon Nanotubes   WS2 Nanotubes Hybrid Films. Журнал Белорусского государственного университета. Физика 2017, No. 3, 111-119.