Title :
Large Current Emission from CNTs Cold Cathode
Author :
Mu, Hui ; Wang, Qilong ; Yin, Xiaowei ; Zhang, Xiaobing ; Lei, Wei ; Lou, Chaogang
Author_Institution :
Dept. of Electron. Eng., Southeast Univ., Nanjing
Abstract :
Carbon nanotubes (CNTs) have attracted great interest in the scientific field because of their unique structure, remarkable properties and potential applications. CNTs have been synthesized by methods such as arc discharge, chemical vapor deposition, laser ablation, etc. Such sustained, high-current field emission is necessary for many technological applications: for example, flat-panel field-emission displays require 10 mA/cm2, while microwave power amplifier tubes require at least 400 mA/cm2. These high-current density levels were previously obtainable only by thermionic emission above 1000 K, or lithographically fabricated tips. Field emission has been reported from other forms of carbon, however, at lower current densities (0.3 mA/cm2 for graphite, 30 mA/cm 2 for diamond)
Keywords :
carbon nanotubes; chemical vapour deposition; current density; diamond; electron field emission; graphite; thermionic cathodes; thermionic electron emission; C; CNTs cold cathode; carbon nanotubes; current density levels; diamond; emission current density; field emission; graphite; thermal chemical vapor deposition; thermionic emission; Arc discharges; Carbon nanotubes; Cathodes; Chemical lasers; Chemical technology; Chemical vapor deposition; Flat panel displays; Laser ablation; Masers; Microwave technology;
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.2006.335212
