Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3269929
Keywords
carbon nanotubes; cathodes; chemical vapour deposition; current density; diamond; electron field emission; nanocomposites
Categories
Funding
- INFN [222426, FP7-SME-2007-1]
Ask authors/readers for more resources
Efficient and robust cold cathodes have been assembled using as emitting material mats of single wall carbon nanotubes (SWCNTs) coated with nanodiamonds. The preparation of the hybrid nanotube/nanodiamond structures by chemical vapor deposition is a route suitable to be scaled up and adapted to the electronic industry requirements. Turn-on field of 1.7 V/mu m and emission current density J of 6 mA/cm(2) at applied field E of 6.2 V/mu m were measured. The field emission properties of SWCNT coated with nanodiamond are very attractive in terms of reproducibility, current stability under medium vacuum and lack of arcing. Moreover, the diamond coating acts against the adsorption of chemical species, making it possible to avoid the outgassing procedures usually needed for current stabilization and allowing to reduce the time response for electron sources assembled with these hybrid materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available