Improved field emission by liquid elastomer modification of screen-printed CNT film morphology

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

Research output: Contribution to journalArticle

Abstract

The effect of improvement on the surface morphology of screen-printed carbon nanotube (CNT) films was studied by using the optically clear poly-dimethylsiloxane (PDMS) elastomer for surface treatment. After the PDMS activation treatment was applied to the diode-type CNT cathode, the entangled carbon nanotube (CNT) bundles were broken up into individual free standing nanotubes to remarkably improve the field-emission characteristics over the as-deposited CNT film. Also, the cathode film morphology of a top gated triode-type structure can be treated by using the proposed surface treatment technique, which is a low-cost process, simple process. The relative uniform emission image showed high brightness with a high anode current. This result shows the possibility of using this technique for surface treatment of large-size field emission displays (FEDs) in the future.

Original languageEnglish
Pages (from-to)16-21
Number of pages6
JournalJournal of Information Display
Volume7
Issue number2
DOIs
Publication statusPublished - 2006

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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