Field-emission characteristics of electrochemically synthesized polypyrrole nanotubes prepared by SDC

Jinsoo Joo, S. J. Lee, D. H. Park, J. Y. Lee, T. J. Lee, S. H. Seo, Cheol Jin Lee

Research output: Contribution to journalArticle

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Abstract

This paper reports the field-emission characteristics of nanotip emitters prepared by the Solution-drop-casting (SDC) of conducting polypyrrole (PPy) nanotubes. Nanotubes of conducting PPy were synthesized using the electrochemical polymerization method with an alumina nanoporous template. The synthesis and formation of PPy nanotubes were confirmed by Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. The nanotip emitters of the field-emission cells were easily patterned using SDC, in which PPy nanomaterials were homogeneously dispersed in organic solvents, and then dropped and dried on an n-type doped Si substrate as the cathode. The results showed that the current density of the field-emission cells increased in the order of ∼ 10 6, and that the lowest threshold electric field was ∼2 V/μm. The emission of the current density was stable with a current-voltage annealing time up to 60 min. The field-emission characteristics were controlled through doping and dedoping of the conducting PPy nanomaterials.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume8
Issue number4
DOIs
Publication statusPublished - 2005 May 17

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polypyrroles
Polypyrroles
Field emission
Nanotubes
field emission
nanotubes
Casting
Nanotips
Nanostructured materials
conduction
emitters
Current density
current density
Electropolymerization
Aluminum Oxide
cells
Organic solvents
Fourier transform infrared spectroscopy
Cathodes
Alumina

ASJC Scopus subject areas

  • Electrochemistry
  • Materials Science(all)

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Field-emission characteristics of electrochemically synthesized polypyrrole nanotubes prepared by SDC. / Joo, Jinsoo; Lee, S. J.; Park, D. H.; Lee, J. Y.; Lee, T. J.; Seo, S. H.; Lee, Cheol Jin.

In: Electrochemical and Solid-State Letters, Vol. 8, No. 4, 17.05.2005.

Research output: Contribution to journalArticle

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AU - Lee, Cheol Jin

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