The authors report the effects of Cs doping on the field emission properties of a five-shell single carbon nanotube. The chiral indices of each shell of this carbon nanotube have been determined using nanobeam electron diffraction, which has four semiconducting shells and one metallic shell in the middle. From the Fowler-Nordheim plots, a reduction from 4.8to3.8eV has been observed in the work function of the single carbon nanotube before and after Cs doping.

Topics
Surface collisions, Work functions, Composite materials, Electron diffraction, Graphene, Nanotubes, Electron sources, Transition metals, Chemical elements, Scattering theory
© 2006 American Institute of Physics.
2006
American Institute of Physics
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