Title :
Characteristic performances of carbon nanotube field emission cathode
Author :
Detian Li ; Myneni, Ganapati ; Changkun Dong
Author_Institution :
Inst. of Micro-nano Struct. & Optoelectron., Wenzhou Univ., Wenzhou, China
Abstract :
The field emission behaviors of multi-walled carbon nanotubes (CNTs) electron source are investigated. The CNT emitters were grown directly on the Ni alloy substrate by the chemical vapor deposition. Anode current 41 μA under 310 V gate voltage with the electron transmission rate of about 70-75%, only about 10% lower than the gate transparency. The electric field generated from the anode could penetrate through the gate grid to enhances the field emission by 30-50 %. There could be a serious pressure rise in the operation due to mainly the molecule desorption from the metal electrodes (gate and anode) by the electron bombardment.
Keywords :
anodes; carbon nanotubes; cathodes; electron field emission; nickel alloys; Ni; anode current; carbon nanotube field emission cathode; chemical vapor deposition; current 41 muA; electron bombardment; electron source; electron transmission; metal electrodes; molecule desorption; multi-walled carbon nanotubes; voltage 310 V; Anodes; Carbon nanotubes; Electron sources; Logic gates; Metals; Substrates; carbon nanotube; electron source; field emission;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7224041