Clean carbon nanotube field emitters aligned horizontally.
Horizontally aligned carbon nanotube (CNT) field emitters, which strongly adhere to the substrate and show good field emission properties, were fabricated by electrophoresis deposition and fissure formation techniques. A thin film of CNTs was deposited on a substrate, by electrophoresis, from an aqueous mixture of CNT and detergent, and then the detergent was deposited also by electropholysis. CNTs with a clean surface were exposed in the fissures produced by firing. The field emission was increased significantly due to the additional deposition of the detergent. When the CNTs were cut by increasing the firing time, the field emission increased significantly, while their stability decreased considerably. Our method does not require any further treatment for field emission.
Jung
Sung Mi
SM
Nano-materials Laboratory, Department of Chemistry, Seoul National University, Republic of Korea.
Hahn
Joeoong
J
Jung
Hyun Young
HY
Suh
Jung Sang
JS
D003902:Detergents / Q000737:chemistry; D004574:Electromagnetic Fields; D004581:Electronics; D004586:Electrophoresis; D004867:Equipment Design; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
D003902:Detergents; D037742:Nanotubes, Carbon; D014025:Titanium