Title :
Effects of Supercritical Fluids Activation on Carbon Nanotube Field Emitters
Author :
Liu, Po-Tsun ; Tsai, Chih-Tsung ; Chang, Ting-Chang ; Kin, Kon-Tsu ; Chang, Pei-Lin ; Chen, Chioumei ; Chen, Yi-Ching
Author_Institution :
Dept. of Photonics & Display Inst., Nat. Chiao Tung Univ., Hsinchu
Abstract :
This paper proposes a novel method to enhance the emission characteristics of carbon nanotubes (CNTs). It is extremely possible for CNTs to adsorb moisture and other contaminants during the fabrication processes, leading to the degraded field emission characteristics. In this work, CNT emitters are activated with commonly used heating process and supercritical carbon dioxide (SCCO2) fluids technology for removing adsorbed residue moisture. Experimental results have demonstrated that the electrical stability and field emission enhancement of CNT emitters are effectively achieved by the SCCO2 fluids treatment compared to the heating process, due to the minimization of residuary moisture in CNTs
Keywords :
adsorption; carbon nanotubes; electron field emission; nanotube devices; C; carbon nanotube field emitters; field emission characteristics; heating process; moisture adsorption; supercritical carbon dioxide fluids; Carbon dioxide; Carbon nanotubes; Degradation; Electron emission; Fabrication; Heat treatment; Moisture; Resistance heating; Solvents; Stability; Carbon nanotubes (CNTs); field emission; supercritical carbon dioxide (SCCO $_{2}$ fluids;
Journal_Title :
Nanotechnology, IEEE Transactions on
DOI :
10.1109/TNANO.2006.886785
