A role of phonon-assisted tunnelling in electrical conductivity of carbon nanotube networks

Abstract

High-field transport properties of single-wall carbon nanotubes (SWCNT) are analysed on the basis of phonon-assisted tunnelling (PhAT) model. This model enables one to explain not only the temperature-dependent current–voltage characteristics of SWCNT, but also the crossover from a semiconducting-like temperature dependence conductivity to a metallic-like one as temperature is increased.
Keywords: carbon nanotubes, electrical conduction, phonon-assisted tunnelling
PACS: 73.40.Gk, 73.63.-b, 73.50.Fq, 73.50.-h