In-situ post-treatment for field emission improvement of carbon nanofibers in inductively coupled plasma system

Author

Weng, C.H. ; Lin, Y.Y. ; Tung, C.H. ; Wei, H.W. ; Leou, K.C. ; Tsai, C.H.

Author_Institution

Dept. of Eng. & Syst. Sci., Nat. Tsing Hua Univ., Taiwan

fYear

2004

fDate

11-16 July 2004

Firstpage

254

Lastpage

255

Abstract

Here we investigate in situ post-treatment of carbon nanofibers in inductively coupled plasma system for field emission improvements. The nanofibers were characterized using SEM, TEM, energy dispersive spectroscopy, micro-Raman spectroscopy and various FE measurements including typical emission current density-electric field (J-E) curves, large-area uniformity of luminance, and long-time stability of emission currents. Certain structural transformations were observed and significantly enhanced FE was achieved. The mechanism of the structural transformations and the corresponding FE enhancement were also investigated.

Keywords

Raman spectra; brightness; carbon fibres; field emission; nanostructured materials; plasma CVD; scanning electron microscopy; solid-state phase transformations; transmission electron microscopy; C; SEM; TEM; carbon nanofibers; emission current density-electric field curves; emission current stability; energy dispersive spectroscopy; field emission improvement; in-situ post-treatment; inductively coupled plasma system; luminance; microRaman spectroscopy; structural transformations; Carbon dioxide; Current measurement; Density measurement; Dispersion; Energy measurement; Iron; Plasma density; Plasma measurements; Plasma stability; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference, 2004. IVNC 2004. Technical Digest of the 17th International

Print_ISBN

0-7803-8397-4

Type

conf

DOI

10.1109/IVNC.2004.1355001

Filename

1355001