Title :
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
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;
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
DOI :
10.1109/IVNC.2006.335210
