Non-ohmic current-voltage characteristics in single-wall carbon nanotube network

Gyu-Tae Kim, S. H. Jhang, J. G. Park, Y. W. Park, S. Roth

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Abstract

The non-ohmic current-voltage (I-V) characteristics of the single-wall carbon nanotube network were investigated at low temperatures. The temperature dependence of resistivity at low current (I<10 μA) shows non-metallic negative dρ/dT from T = 1.4-300 K. Below T<15 K, gradual decreases of resistivity are observed as the applied currents increase, showing significant non-ohmic behavior at high electric field. The I-V curves in the non-ohmic regime can be fitted well by the fluctuation-induced tunneling model, indicating the importance of inter-tubular contacts or inherent energy barriers inside the tubes.

Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalSynthetic Metals
Volume117
Issue number1-3
DOIs
Publication statusPublished - 2001 Feb 15
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

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