Improved field emission stability of thin multiwalled carbon nanotube emitters

Guohai Chen, Dong Hoon Shin, Suki Kim, Siegmar Roth, Cheol Jin Lee

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The improved field emission stability of thin multiwalled carbon nanotube (thin-MWCNT) emitters using a tip sonication process has been investigated. The thin-MWCNTs showed short lengths and many open tips after the tip sonication treatment. The field emission properties of the thin-MWCNT emitters were investigated. Field emission stability dramatically increased as the tip sonication time increased. In particular, field emission current at an acceleration condition was quite stable and showed no degradation for over 19h after tip sonication treatment of 30min. Tip sonication could effectively cut CNTs short and regulate the length of CNTs. Therefore, field emission stability was significantly improved during a long period of operation because many shortened thin-MWCNTs could participate in field emission after the treatment.

Original languageEnglish
Article number015704
JournalNanotechnology
Volume21
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1

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Carbon Nanotubes
Sonication
Multiwalled carbon nanotubes (MWCN)
Field emission
Degradation

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Improved field emission stability of thin multiwalled carbon nanotube emitters. / Chen, Guohai; Shin, Dong Hoon; Kim, Suki; Roth, Siegmar; Lee, Cheol Jin.

In: Nanotechnology, Vol. 21, No. 1, 015704, 01.01.2010.

Research output: Contribution to journalArticle

Chen, Guohai ; Shin, Dong Hoon ; Kim, Suki ; Roth, Siegmar ; Lee, Cheol Jin. / Improved field emission stability of thin multiwalled carbon nanotube emitters. In: Nanotechnology. 2010 ; Vol. 21, No. 1.
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