NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2016, 7 (1), P. 37–43
Electrical properties of carbon nanotubes / WS2 nanotubes (nanoparticles) hybrid films
V. K. Ksenevich – Department of Physics, Belarusian State University, Minsk, Belarus; ksenevich@bsu.by
N. I. Gorbachuk – Department of Physics, Belarusian State University, Minsk, Belarus
Ho Viet – Department of Physics, Belarusian State University, Minsk, Belarus
M.V. Shuba – Research Institute for Nuclear Problems, Belarusian State University, Minsk, Belarus
P. P. Kuzhir – Research Institute for Nuclear Problems, Belarusian State University, Minsk, Belarus
S. A. Maksimenko – Research Institute for Nuclear Problems, Belarusian State University, Minsk, Belarus
A. G. Paddubskaya – Center for Physical Sciences and Technology, Vilnius, Lithuania
G. Valusis – Center for Physical Sciences and Technology, Vilnius, Lithuania
A. D. Wieck – Department of Physics and Astronomy, Bochum RuhrUniversity, Bochum, Germany
A. Zak – Department of Sciences, Holon Institute of Technology, Holon, Israel
R. Tenne – Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, Israel
DC and AC electrical properties of hybrid films, consisting of carbon nanotubes and tungsten disulfide nanotubes (and fullerene like nanoparticles) were studied within the 2 – 300 K temperature range and over the 20 Hz – 1 MHz frequency range. The temperature dependences of the resistance R(T) exhibit behavior typical for the fluctuation-induced tunneling model in the intermediate temperature range. Analysis of the dependences of real and imaginary components of the impedance on the frequency (Z’(f ) and Z”(f )) demonstrates the rising role of the contact barriers between carbon nanotubes inside hybrid films, consisting of the carbon nanotubes and inorganic tungsten disulfide nanotubes as the temperature was decreased. The active component of the impedance was found to prevail in the AC electrical properties of the hybrid films, consisting of multiwall carbon nanotubes and WS2 nanoparticles over the entire available temperature range.
Keywords: carbon nanotubes, inorganic nanotubes, tungsten disulfide, impedance, electrical properties.
PACS 73.63.Fg
DOI 10.17586/2220-8054-2016-7-1-37-43