miun.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Raman spectroscopy and field-emission properties of CVD-grown carbon-nanotube films
Show others and affiliations
2001 (English)In: Applied Physics a-Materials Science & Processing, Vol. 73, 409-418 p.Article in journal (Refereed) Published
Abstract [en]

Carbon-nanotube films are very efficient cathodes for field-emission devices. This study presents a comprehensive comparison between structural, spectroscopic and field-emission properties of films of aligned and non-aligned multi-wall nanotubes (MWNTs) which are grown by thermal chemical vapour deposition. Three types of films are investigated: vertically aligned MWNTs with clean and coated nanotube side walls as well as non-aligned MWNT films. Raman spectra taken on the aligned MWNT films consist of many lines of first-, second- and third-order signals. Several lines are reported here far the first time for MWNTs. The presence of the surface coating leads to a decrease and broadening of the higher-order signals as well as an increase in the disorder-induced contributions in the first-order regime. The aligned MWNT films have excellent field-emission properties with very high emission current densities and low turn-on and threshold fields. The presence of a surface coating has no impact on the efficiency of the field-emission process. Films of non-aligned MWNTs show considerably reduced electron-emission current densities and larger critical fields.

Place, publisher, year, edition, pages
2001. Vol. 73, 409-418 p.
Identifiers
URN: urn:nbn:se:miun:diva-14368OAI: oai:DiVA.org:miun-14368DiVA: diva2:435737
Note
Sveningsson, M Morjan, RE Nerushev, OA Sato, Y Backstrom, J Campbell, EEB Rohmund, FAvailable from: 2011-08-19 Created: 2011-08-19 Last updated: 2011-11-27Bibliographically approved

Open Access in DiVA

No full text

Search in DiVA

By author/editor
Bäckström, Joakim

Search outside of DiVA

GoogleGoogle Scholar

Total: 744 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf