Title :
Fabrication of uniform carbon nanotube field emitters and application to vacuum devices
Author_Institution :
Fac. of Nanotechnol. & Adv. Mater. Eng., Sejong Univ., Seoul, South Korea
Abstract :
Narrow length distribution of raw CNTs, used for preparing the CNT paste, resulted in uniform heights of standing CNT emitters in dots, consequently giving rise to high emission uniformity over an area. Upon introducing a small amount of O3 during FE, long, Joule-heated CNTs were selectively trimmed in a way that reduced not only the overall heights of CNTs but also their height difference. Thus, O3 electrical trimming seemed to increase the number of working emitters to produce a specific emission current, considerably improving both the emission uniformity and the lifetime of CNT emitters.
Keywords :
carbon nanotubes; field emitter arrays; nanofabrication; CNT emitters; CNT paste; Joule-heated CNT; electrical trimming; narrow length distribution; specific emission current; uniform carbon nanotube field emitter fabrication; vacuum devices; working emitters; Brightness; Carbon nanotubes; Current density; Electric fields; Fabrication; Iron; Surface treatment; Carbon nanotubes; electrical trimming; field emission; height uniformity; length uniformity;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2012 25th International
Conference_Location :
Jeju
Print_ISBN :
978-1-4673-1983-6
Electronic_ISBN :
pending
DOI :
10.1109/IVNC.2012.6316873
