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General theories for the electrical transport properties of carbon nanotubes

Singh, LT and Nanda, KK (2011) General theories for the electrical transport properties of carbon nanotubes. In: Nanotechnology, 22 (31).

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Official URL: http://iopscience.iop.org/0957-4484/22/31/315705


We have shown that the general theories of metals and semiconductors can be employed to understand the diameter and voltage dependency of current through metallic and semiconducting carbon nanotubes, respectively. The current through a semiconducting multiwalled carbon nanotube (MWCNT) is associated with the energy gap that is different for different shells. The contribution of the outermost shell is larger as compared to the inner shells. The general theories can also explain the diameter dependency of maximum current through nanotubes. We have also compared the current carrying ability of a MWCNT and an array of the same diameter of single wall carbon nanotubes (SWCNTs) and found that MWCNTs are better suited and deserve further investigation for possible applications as interconnects.

Item Type: Journal Article
Publication: Nanotechnology
Publisher: IOP Publishing ltd
Additional Information: Copyright of this article belongs to IOP Publishing ltd .
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 05 Aug 2011 09:05
Last Modified: 05 Aug 2011 09:05
URI: http://eprints.iisc.ac.in/id/eprint/39590

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