Title :
Efficient field emission of carbon nanotubes grown on a copper substrate
Author :
Yin, Xiaowei ; Wang, Qilong ; Lou, Chaogang ; Zhang, Xiaobing ; Lei, Wei ; Huang, Chengxian ; Yang, Guodong
Author_Institution :
Southeast Univ., Beijing
Abstract :
Carbon nanotubes have been grown on a polished copper substrate by thermal chemical vapor deposition (CVD). Nickel film is deposited on the metallic substrate as catalyst and the reactant gas is acetylene. Efficient field emission of CNTs emitters (Emission area is about 3.14 mm2) is observed from I-V and F-N curves. Stable emission current with the density of more than 20mA was got at the electric field of 2.87V/um. SEM and TEM were used to characterize the morphologies of carbon nanotubes.
Keywords :
chemical vapour deposition; field emission; nanotube devices; acetylene; carbon nanotubes; chemical vapor deposition; field emission; Aging; Carbon nanotubes; Chemical vapor deposition; Copper; Diodes; Flat panel displays; Morphology; Nickel; Scanning electron microscopy; Substrates; CVD; carbon nanotubes; field emission;
Conference_Titel :
Vacuum Electronics Conference, 2007. IVEC '07. IEEE International
Conference_Location :
Kitakyushu
Print_ISBN :
1-4244-0633-1
DOI :
10.1109/IVELEC.2007.4283350
