Electric Property Control of Carbon Nanotubes by Defects

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Published 25 April 2008 Copyright (c) 2008 The Japan Society of Applied Physics
, , Citation Satoru Suzuki et al 2008 Jpn. J. Appl. Phys. 47 3292 DOI 10.1143/JJAP.47.3292

1347-4065/47/4S/3292

Abstract

Effects of local low-energy irradiation on the electric properties of metallic single-walled carbon nanotubes were studied. Defects formed by 20 keV-electron irradiation in an electron beam lithography system converted the room-temperature electric properties to p-type or ambipolar semiconducting. Coulomb oscillation was also observed at room temperature. The results also suggest that electric measurements are inconclusive for distinguishing whether a nanotube is metallic or semiconducting.

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10.1143/JJAP.47.3292