This article is cited in 16 papers

Low dimensional systems

Formation mechanisms of nanocomposite layers based on multiwalled carbon nanotubes and non-stoichiometric tin oxide

V. V. Bolotov, V. E. Kan, P. M. Korusenko, S. N. Nesov, S. N. Povoroznyuk, I. V. Ponomareva, V. E. Roslikov, Yu. A. Sten'kin, R. V. Shelyagin, E. V. Knyazev

Omsk Branch, Institute for Semiconductor Physics, Siberian Branch, RAS

Abstract: Nanocomposite layers based on multiwalled carbon nanotubes (MWCNTs) and non-stoichiometric tin oxide (SnO$_x$) have been grown by magnetron deposition and CVD methods. In the case of the CVD method, the study of the structure and phase composition of obtained nanocomposite layers has shown that a tin oxide “superlattice” is formed in the MWCNT layer volume, fixed by SnO$_x$ islands on the MWCNT surface. During magnetron deposition, the MWCNT surface is uniformly coated with tin oxide islands, which causes a change in properties of individual nanotubes. Electrical measurements have revealed the sensitivity of nanocomposite layers to (NO$_2$)$^-$ molecule adsorption, which is qualitatively explained by a change in the conductivity of the semiconductor fraction of $p$-type MWCNTs.

Received: 11.05.2011

 English version: Physics of the Solid State, 2012, 54:1, 166–173

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