Characterization of three-dimensional nano-carbon field emission emitters

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A unique three-dimensional nano-carbon electron emitter film with high emission current density at low electric field has been developed on stainless steel substrate by a direct current plasma chemical vapor deposition system. Scanning electron microscopy image taken from this film indicates that the film contains cone-like emitters whose array density is about 3×10 6/cm 2. The center of each emitter is a carbon nanoneedle, and many carbon nano-walls are grown from the needle. Transmission electron microscopy observation reveals that the needles are hollow cone shape with bamboo-joint like structures on the side surface. Carbon nano-wall growth just starts from the bamboo joints. Raman spectroscopy was used to evaluate its graphitization degree and crystallinity. The I-V characteristic exhibits an emission current density of 143mA/cm 2 at 2.2V/μm, and the field emission current is durable, making it possibly suitable for developing field emission devices.

Original languageEnglish
Title of host publicationTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012Om
Pages328-329
Number of pages2
DOIs
StatePublished - 2012
Externally publishedYes
Event25th International Vacuum Nanoelectronics Conference, IVNC 2012 - Jeju, Korea, Republic of
Duration: 9 Jul 201213 Jul 2012

Publication series

NameTechnical Digest - 25th International Vacuum Nanoelectronics Conference, IVNC 2012

Conference

Conference25th International Vacuum Nanoelectronics Conference, IVNC 2012
Country/TerritoryKorea, Republic of
CityJeju
Period9/07/1213/07/12

Keywords

  • Carbon materials
  • Chemical vapor deposition
  • Field emission
  • Nanocrystalline materials
  • Raman

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