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

Volume

6

Issue

1

fYear

2007

Firstpage

29

Lastpage

34

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;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2006.886785

Filename

4063337