Title :
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
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;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2004. IVNC 2004. Technical Digest of the 17th International
Print_ISBN :
0-7803-8397-4
DOI :
10.1109/IVNC.2004.1355001
