JOURNAL ARTICLE
Vertically aligned graphene sheets grown on carbon nanotubes
Abstract
Vertically aligned graphene sheets were grown on carbon nanotubes by microwave-plasma enhanced chemical vapor deposition. Due to their high multistage enhancement and intrinsic low contact resistance, these graphene sheets resulted in good emission property. It was found that the turn-on field was 1.4V/μm, and the threshold-field corresponding to emission current density of 1mA/cm 2 was about 2.9V/μm. The high enhancement factor was attributed to the effects of the high aspect ratio of graphene sheets and the geometry of carbon nanotubes.
Keywords:
Graphene Carbon nanotube Materials science Chemical vapor deposition Field electron emission Carbon fibers Graphene nanoribbons Nanotechnology Current density Chemical engineering Optoelectronics Composite material Physics
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Topics
Graphene research and applications
Physical Sciences → Materials Science → Materials Chemistry
Molecular Junctions and Nanostructures
Physical Sciences → Engineering → Electrical and Electronic Engineering
Carbon Nanotubes in Composites
Physical Sciences → Materials Science → Materials Chemistry
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