Hee-Sung Moon

Thermal Annealing Effect on the Field Emission Characteristics of Double-Walled Carbon Nanotubes

The effect of thermal annealing on the field emission properties of double-walled carbon nanotubes (DWCNT) grown by chemical vapour deposition is studied. The properties of the DWCNTs were examined using SEM, TEM, Raman and TGA analysis. It was found that high-temperature annealing enhances the field emission performance of DWCNTs

Field emission and lifetime characteristics of carbon nanotube paste including nitrogen foaming agent

We added azodicarbamide (ADC) to protect carbon nanotube (CNT) paste from degradation. The agent produces nitrogen gas by heat at 190-210. Nitrogen (N/sub 2/) acts as the anti-oxidation gas for CNT. The measurement of field emission carried out using a diode structure showed that the electron emission of the agent-added CNT films uniformly had a field of 5.49 V//spl mu/m at a current density of 100 /spl mu/m/cm/sup 2/ (1/500 duty). Furthermore, the lifetime of CNT samples was about five times as much as that of the pristine ones.