Improvement of field emission from printed carbon nanotubes by a critical bias field

H. J. Lee, S. I. Moon, J. K. Kim, Y. D. Lee, S. Nahm, J. E. Yoo, J. H. Han, Y. H. Lee, S. W. Hwang, B. K. Ju

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19 Citations (Scopus)


By applying a critical bias field instead of conventional surface treatments, the electron emission properties of screen-printed nanotubes were investigated through scanning electron microscopy and emission current-voltage characteristics. After the surface treatment, at the bias field of 2.5 Vμm, the electron emission current density with good uniform emission sites reached the value of 2.13 mA cm2, which was 400 times higher than that of the untreated sample, and the turn-on voltage decreased markedly from 700 to 460 V. In addition, the enhancement of the alignment of carbon nanotubes to the vertical direction was observed, resulting in an increase in the field-enhancement factor.

Original languageEnglish
Article number016107
JournalJournal of Applied Physics
Issue number1
Publication statusPublished - 2005 Jul 1

Bibliographical note

Funding Information:
This work was supported by the Ministry of Commerce, Industry, and Energy of Korea through a Components and Materials Technology Development project.

ASJC Scopus subject areas

  • General Physics and Astronomy


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