Title :
Improve the Emission Stability with Large Current from a CNTs Cathode
Author :
Di, Yunsong ; Lei, Wei ; Zhang, Xiaobing ; Chu, Kairong ; Cui, Yunkang ; Wang, Jinchan ; Yang, Guodong ; Huang, Chengxian
Abstract :
Field emission characteristic and stability of a carbon nanotubes (CNTs) cathode have been studied by testing the emission current at different levels. By monitoring the emission I-V curves, we can obtain a relative stable maximum current from a CNTs cathode, after reaching the maximum current, the emission current fluctuate seriously and sparking can be seen at the site of emission. From the experimental results, the causes of emission instability and sparking is concluded and the influence of the sparking and ion bombardment on the emission performance of a CNTs cathode is obtained
Keywords :
carbon nanotubes; cathodes; field emission; carbon nanotubes cathode; emission current testing; emission stability; field emission; ion bombardment; sparking; Carbon dioxide; Carbon nanotubes; Cathodes; Electron beams; Electronic equipment testing; Microelectronics; Monitoring; Physics; Sparks; Stability; carbon nanotube; emission performance; field emission; ion bombardment; large current; spark discharge; stability;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666319
