Field emission enhancement by electric field activation in screen-printed carbon Nanotube film

Hyeon Jae Lee, Yang Doo Lee, Woo Sung Cho, Jai Kyeong Kim, Sung Woo Hwang, Byeong Kwon Ju

Research output: Contribution to journalArticle


By applying a critical field treatment instead of the conventional surface treatments such as soft rubber roller, ion beam irradiation, adhesive taping, and laser irradiation, electron emission properties of screen-printed carbon nanotubes (CNTs) were enhanced and investigated based on the emission current-voltage characteristics through scanning electron microscopy. After nanotube emitters were activated at the applied electric-field of 2.5 V/um, the electron emission current density with good uniform emission sites reached the value of 2.13 mA/cm2, which is 400 times higher than that of the untreated sample, and the turn-on voltage decreased markedly from 700 to 460 V. In addition, enhancement of the alignment of CNTs to the vertical direction was observed.

Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalJournal of Information Display
Issue number4
Publication statusPublished - 2005



  • Carbon nanotube
  • Field-emission
  • Screen-printing
  • Surface treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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