Title :
Enhanced Surface Morphologies of Printed Carbon Nanotubes by Heat Treatment and Their Field Emission Properties
Author :
Lee, Hyeon-Jae ; Lee, Yang-Doo ; Cho, Woo-Sung ; Lee, Yun-Hi ; Kim, Jae-Kyeong ; Hwang, Sung-Woo ; Ju, Byeong-Kwon
Author_Institution :
Coll. of Eng., Korea Univ., Seoul
Abstract :
A heating process for obtaining free-standing carbon nanotube emitters is presented with the aim of improving field-emission properties from the screen-printed multiwalled carbon nanotube (MWCNT) films. Using an atmosphere with an optimum combination of nitrogen and air for heat treatment of CNT films, the CNT emitters can be made to protrude from the surface. This allows for a high emission current and the formation of very uniform emission sites without special surface treatment. The morphological change of the CNT film by this technique has eliminated additional processing steps, such as surface treatment which may result in secondary contamination and damage to the film
Keywords :
carbon nanotubes; electron field emission; heat treatment; surface morphology; thin films; C; field emission properties; heat treatment; high emission current; screen-printed multiwalled carbon nanotube films; surface morphology; Atmosphere; Carbon nanotubes; Flat panel displays; Furnaces; Heat treatment; Iron; Surface contamination; Surface emitting lasers; Surface morphology; Surface treatment;
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.2006.335486
