Conductivity Decrease in Carbon Nanotubes Caused by Low-Acceleration-Voltage Electron Irradiation

  • Suzuki Satoru
    NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation
  • Kobayashi Yoshihiro
    NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation

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Effects of low-acceleration-voltage (20 kV) electron irradiation damage in single-walled carbon nanotubes (SWNTs) were studied by in-situ electric measurements. The irradiation drastically decreased the conductivity for both metallic and semiconducting nanotubes due to the irradiation-induced damage. Intensive electron irradiation made the SWNTs almost insulating. This phenomenon could be utilized to fabricate nanotube-based electric networks.

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