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Efficient field emission from Li-salt functionalized multiwall carbon nanotubes on flexible substrates
Author(s) -
Stephen Matthew Lyth,
Ross A. Hatton,
S. Ravi P. Silva
Publication year - 2007
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2430091
Subject(s) - carbon nanotube , materials science , field electron emission , lithium (medication) , nanotechnology , frit compression , potential applications of carbon nanotubes , chemical engineering , optical properties of carbon nanotubes , carbon nanobud , carbon fibers , salt (chemistry) , work function , carbon nanotube supported catalyst , composite material , nanotube , carbon nanofiber , electron , chemistry , organic chemistry , medicine , physics , engineering , layer (electronics) , quantum mechanics , endocrinology , composite number
The authors report extremely low electron field emission thresholds of 0.25V∕μm from lithium salt functionalized multiwall carbon nanotubes adhered to carbon fiber fabric. Crucially, these nanostructured field emitters are flexible, air stable, and produced via a low cost dip-processing method using an aqueous nanotube ink, whereupon the nanotubes spontaneously assemble onto a surface oxidized carbon fiber matrix to form dense mats. The very low emission threshold is rationalized in terms of the morphology of the nanotube mats and the relatively low work function of lithium salt derivated carbon nanotubes.

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