Field emission from multiwall carbon nanotubes prepared by electrodeposition without the use of a dispersant

S. M. Lyth, F. Oyeleye, R. J. Curry, J. Davis, S. R.P. Silva

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We present a technique of manufacturing multiwall carbon nanotube (MWNT) field emitters by a nickel electrodeposition process, without using a surfactant to disperse the MWNTs in solution. Sonication adequately disperses individual MWNTs throughout the solution and MWNTs can be deposited onto a copper substrate. However, over time there is a reduction of the free MWNT concentration in solution and an associated change in the morphology of the deposit. The initial concentration of MWNTs in solution also plays a crucial role in the morphology of the deposits. The threshold field of electron field emission measurements remained in the order of 20 Vμm regardless of the deposition conditions.

Original languageEnglish
Pages (from-to)1362-1364
Number of pages3
JournalJournal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume24
Issue number3
DOIs
Publication statusPublished - May 1 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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