Gas sensing properties of printed multiwalled carbon nanotubes using the field emission effect

Yang Doo Lee, Woo Sung Cho, Seung IL Moon, Yun Hi Lee, Jai Kyeong Kim, Sahn Nahm, Byeong Kwon Ju

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Gas sensors for NO2 detection were fabricated using printed multiwalled carbon nanotubes (MWCNTs) before and after electric field surface treatment. Printed MWCNTs showed an increase of sensitivity upon exposure to NO2 and field emission due to vertical alignment and protrusion of CNTs from surface layer after electric field surface treatment. Electron field emission plays a role recovery when exposed to gas molecules in CNT. A Fast recovery time of the printed MWCNT gas sensor was obtained by ohmic heat with a partial field emission effect at room temperature.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
JournalChemical Physics Letters
Volume433
Issue number1-3
DOIs
Publication statusPublished - 2006 Dec 29

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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