Field electron emission properties of carbon nanotube films deposited by electrophoresis

Author: Md Nor, R

Source: Materials Research Innovations, Volume 15, Supplement 2, August 2011 , pp. s78-s81(4)

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Abstract:

The merit of various kinds of carbon nanotubes as field electron emission cathode materials has been studied. The field electron emission characteristics of electrophoretically deposited films of single walled carbon nanotubes, multiwalled carbon nanotubes of diameter between 10 and 20 and >50 nm and carbon nanofibres with diameters between 200 and 600 nm were investigated. Results of the measurements revealed that the field enhancement factor ?, the turn on electric field and the threshold electric field were strongly dependent on the size of carbon materials, where single walled carbon nanotubes produced the best results in terms of lowest electric field values, highest field enhancement factor and highest current density.

Keywords: Carbon nanotubes; Electrophoresis; Field electron emission

Document Type: Original Article

DOI: http://dx.doi.org/10.1179/143307511X1303189074

Affiliations: Department of Physics, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia

Publication date: 2011-08-01

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