Influence of structural features of fullerene-containing material deposited from solution on its resistive properties
UDC
53.06, 538.9, 621.31, 621.38DOI:
https://doi.org/10.31429/vestnik-15-4-85-92Abstract
The article deals with carbon films obtained by precipitation from suspensions of fullerene-containing materials (FСM) in benzene at different concentrations of C60 fullerene. Fullerene-containing material was obtained by low-temperature cracking in the processing of polymeric organic raw materials. Fullerene C60 to be added to FCM in the amount of 1–70% was produced by the method of electric arc spraying of graphite and separation using toluene. For the deposition of films, glass substrates and glass substrates with a layer of conducting indium tin oxide were used. After obtaining the film structures, the study of their surface was carried out using optical microscopy. The study showed that at low concentrations of C60 (less than 30%), individual microparticles with a size of several microns form on the surface of the films, while at high concentrations their size reaches 10 microns and more. In addition, at high concentrations, microparticles are arranged in chains. Investigation of the temperature dependences of the resistance of film structures showed that at fullerene concentrations up to 10%, the conductivity is combined. For large C60 percentages, characteristics typical of semiconductors were observed. At low fullerene concentrations in FСM (1‒5%), the current-voltage characteristics of the film structures were linear. With its increase, a nonlinear dependence of the current on voltage was observed.
Keywords:
carbon composites, fullerene-containing material, fullerene, deposition from solution, temperature dependence of resistance, current-voltage characteristics, concentrationReferences
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Copyright (c) 2018 Mazinov A.A., Gurchenko V.S., Tutunik A.S., Shevchenko A.I.
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