Study on Emission Stability and Uniformity of a CNT Cathode

Author

Di, Yunsong ; Lei, Wei ; Zhang, Xiaobing ; Cui, Yunkang ; Chen, Jing ; Chu, Kairong ; Wang, Jinchan

Author_Institution

Dept. of Electron. Eng., Southeast Univ., Nanjing

fYear

2006

fDate

38899

Firstpage

347

Lastpage

348

Abstract

An efficient method is used to improve the emission stability and uniformity of the field emission from a carbon nanotube (CNT) cathode. In this method, a fully sealed device with CNTs cathode is exhausted by a pumping system. At the same time, this device is baking at a temperature about 400degC and maintains for a few minutes, and an overload current is applied. The overload current can burn the nanotubes which are over-outcrop to the surface. Besides this, successive emission cycles process is designed to aging the cathode and get rid of the residual gas stored in the cathode layer. Consequently, the emission stability and uniformity of a CNTs cathode have been improved apparently

Keywords

ageing; carbon nanotubes; cathodes; electron field emission; outgassing; scanning electron microscopy; C; aging; baking; carbon nanotube cathode; emission stability; field emission; outgassing; overload current; pumping system; scanning electron microscopy; Cathodes; Costs; Dielectrics; Electrodes; Electron beams; Fabrication; Flat panel displays; Low voltage; Stability; Surface morphology;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference, 2006 and the 2006 50th International Field Emission Symposium., IVNC/IFES 2006. Technical Digest. 19th International

Conference_Location

Guilin

Print_ISBN

1-4244-0401-0

Type

conf

DOI

10.1109/IVNC.2006.335210

Filename

4134602