Combinatorial evaluation for field emission properties of carbon nanotubes

Yosuke Shiratori, Hisashi Sugime, Suguru Noda

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Field emission properties of carbon nanotubes (CNTs) were comparatively evaluated by using combinatorial CNT libraries. The libraries were prepared by combinatorial masked deposition of a Co catalytic layer on Al2O 3/Si substrates and subsequent CNT growth by chemical vapor deposition from ethanol. Each library reproduced various types of single- and multiwalled carbon nanotubes with different morphologies and a variety of field emission properties. Combinatorial evaluations immediately identified the CNTs preferable as field emitters. The results obtained from individual field emission evaluations for samples with a constant nominal Co thickness agreed well with the results obtained from comparative evaluations for combinatorial CNT libraries. The results revealed that protrusive single-walled carbon nanotubes with a moderate interspacing showed the best field emission properties.

Original languageEnglish
Pages (from-to)17974-17982
Number of pages9
JournalJournal of Physical Chemistry C
Volume112
Issue number46
DOIs
Publication statusPublished - 2008 Nov 20
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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