Electron emission properties of carbon nanotubes

Masaaki Hirakawa, Saki Sonoda, Chiaki Tanaka, Hirohiko Murakami, Hiroyuki Yamakawa

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


We report on the field emission properties of carbon nanotubes, focusing on current density versus electric field (J-F) characteristics and the spacing between the emitter and collector. We grew carbon nanotubes on SUS304, nickel, Inconel-600, and Invar-42 substrates using plasma-enhanced chemical vapor deposition, using methane gas as the carbon source and hydrogen gas as the catalyst and dilution gas. We found that nanotubes grew fastest on Invar-42. Nanotubes were distributed from 50 to 100 nm in diameter and from 1 to 30 μm long. Onset field of the field emission was 0.7 V/μm and the current density was 1 mA/cm2 at an electric field of 3.0 V/μm. A Fowler-Nordheim plot was made. Field enhancement factor β and emission area α were calculated and compared between substrates. Using nickel on quartz glass, carbon nanotubes were selectively fabricated on metal lines on quartz glass.

Original languageEnglish
Pages (from-to)662-665
Number of pages4
JournalApplied Surface Science
Issue number170
Publication statusPublished - Jan 15 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Condensed Matter Physics
  • General Physics and Astronomy
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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