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Electron-emission properties of titanium carbide-coated carbon nanotubes grown on a nano-sized tungsten tip

Title
Electron-emission properties of titanium carbide-coated carbon nanotubes grown on a nano-sized tungsten tip
Author
허신
Keywords
Carbon nanotubes (CNTs); Titanium carbide (TiC); Direct growth; Electron emission; Stability; FIELD-EMISSION; FILMS
Issue Date
2008-12
Publisher
ELSEVIER SCIENCE SA
Citation
THIN SOLID FILMS, v. 517, No. 3, Page. 1156-1160
Abstract
Thin films (< 30 nm) of titanium carbide (TiC) are coated on carbon nanotubes (CNTs), directly grown on nano-sized (~ 500 nm in diameter) conical-type tungsten (W) tips, by employing an inductively coupled plasma chemical vapor deposition (ICP-CVD) technique. Modifications to structural properties (such as length to diameter ratio, crystal quality, and growth behavior) of CNTs due to TiC-coating are monitored using high-resolution TEM, field-emission SEM, and Raman spectroscopy. The driving voltage required to obtain the same level of emission current in CNTs-emitter is significantly reduced by TiC-coating. It is also noted that the degradation of emission current due to prolonged operation (up to 30 h) is remarkably suppressed by TiC-coating.
URI
https://www.sciencedirect.com/science/article/pii/S0040609008009917http://repository.hanyang.ac.kr/handle/20.500.11754/80862
ISSN
0040-6090
DOI
10.1016/j.tsf.2008.08.168
Appears in Collections:
COLLEGE OF COMPUTING[E] > COMPUTER SCIENCE(소프트웨어학부) > Articles
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