IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Nanotubes: Science and Applications Topical Conference Friday Sessions
       Session NT+EL+NS-FrM

Paper NT+EL+NS-FrM3
Laser Irradiation Effect on Field Emission of Carbon Nanotubes

Friday, November 2, 2001, 9:00 am, Room 133

Session: Nanotubes: Field Emission
Presenter: T.W. Jeong, Samsung Advanced Institute of Technology, Korea
Authors: T.W. Jeong, Samsung Advanced Institute of Technology, Korea
S. Yu, Samsung Advanced Institute of Technology, Korea
J.H. Lee, Samsung Advanced Institute of Technology, Korea
J.N. Heo, Samsung Advanced Institute of Technology, Korea
W.S. Kim, Sungkyunkwan University, Korea
W. Yi, Samsung Advanced Institute of Technology, Korea
J.B. Yoo, Sungkyunkwan University, Korea
J.M. Kim, Samsung Advanced Institute of Technology, Korea
Correspondent: Click to Email
Recently, field emission properties of carbon nanotubes (CNTs) have been intensivly studied as electron emission sources in field emission displays, since CNTs exhibit a good emission stability, low operating voltages, and high saturation electric field for field emission. Through current-voltage measurment, we have investigated the effect of laser irradiation on the field emission characteristics of CNT films. Multi-walled CNT thin layers were grown on the Ni/TiN sputtered alumina substrate by thermal chemical vapor deposition (CVD) process, and single-walled CNT layers were fabricated by screen printing of CNT paste onto the glass and subsequent heat treatment. In case of the CNT film grown by the thermal CVD, laser irradiation does not influence the field emission characteristics significantly. On the while, in case of the CNT film prepared by paste process, the field emission current was enhanced up to 10 times after the irradiation. Main reason for the current increase is considered as thermal heating by the laser, since organic materials existing in the paste-processed CNTs are detached out by the heat exposure leading to a clean surface of electron emitting CNTs. When the intensity of the laser was increased over a certain level, the emission current was reduced due to CNT deterioration by the heat. Therefore, laser irradiation onto the paste-processed CNTs is worthwhile for further study since currently available CNT based FEDs are fabricated mainly by paste process.