10.1021/nn201149y.s001
Néstor Perea-López
Néstor
Perea-López
Bernabé Rebollo-Plata
Bernabé
Rebollo-Plata
Juan Antonio Briones-León
Juan Antonio
Briones-León
Aarón Morelos-Gómez
Aarón
Morelos-Gómez
Daniel Hernández-Cruz
Daniel
Hernández-Cruz
Gustavo A. Hirata
Gustavo A.
Hirata
Vincent Meunier
Vincent
Meunier
Andrés R. Botello-Méndez
Andrés R.
Botello-Méndez
Jean-Christophe Charlier
Jean-Christophe
Charlier
Benji Maruyama
Benji
Maruyama
Emilio Muñoz-Sandoval
Emilio
Muñoz-Sandoval
Florentino López-Urías
Florentino
López-Urías
Mauricio Terrones
Mauricio
Terrones
Humberto Terrones
Humberto
Terrones
Millimeter-Long Carbon Nanotubes: Outstanding Electron-Emitting Sources
American Chemical Society
2011
density
field enhancement factor
source
electron beam generation
carbon nanotubes
device
field emission properties
length
2011-06-28 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Millimeter_Long_Carbon_Nanotubes_Outstanding_Electron_Emitting_Sources/2637802
We are reporting the fabrication of a very efficient electron source using millimeter-long and highly crystalline carbon nanotubes. These devices start to emit electrons at fields as low as 0.17 V/μm and reach threshold emission at 0.24 V/μm. In addition, these electron sources are very stable and can achieve a peak current density of 750 mA cm<sup>–2</sup> at only 0.45 V/μm. In order to demonstrate intense electron beam generation, these devices were used to produce visible light by cathodoluminescence. Finally, density functional theory calculations were used to rationalize the measured electronic field emission properties in open carbon nanotubes of different lengths. The modeling establishes a clear correlation between length and field enhancement factor.