Energy distributions of field emitted electrons from a multi-wall carbon nanotube

Akihiro Takakura, Koichi Hata, Yahachi Saito, Kohei Matsuda, Takayuki Kona, Chuhei Oshima

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Field emission energy distributions of electrons from one of the six pentagons located at the end of a multi-wall carbon nanotube have been measured by means of a high-resolution cylindrical energy analyzer. In a clean pentagon, the sub-peak was obtained at about 500meV below the main peak, exhibiting a shift with increasing applied voltage. For electrons emitted from an adsorbate onto the pentagon, no fine structure was observed in the spectra. The broadening of the leading edge was also observed for both clean and adsorbed pentagon, indicating the field penetration into the nanotube due to its semimetallic nature. The full-width at half-maximum was 280meV at the applied voltage of 660V and increased linearly with applied voltage.

Original languageEnglish
Pages (from-to)139-143
Number of pages5
JournalUltramicroscopy
Volume95
Issue numberSUPPL.
DOIs
Publication statusPublished - 2003 May

Keywords

  • Carbon nanotube
  • Field emission
  • Field emission energy distribution
  • Surface electronic phenomena

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation

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