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Electron-emission properties of titanium carbide-coated carbon nanotubes grown on a nano-sized tungsten tip
- Authors
- Kim, Young-Kwang; Kim, Jong-Pil; Park, Chang-Kyun; Yun, Sung-Jun; Kim, Won; Heu, Shin; Park, Jin-Seok
- Issue Date
- Dec-2008
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Carbon nanotubes (CNTs); Titanium carbide (TiC); Direct growth; Electron emission; Stability
- Citation
- THIN SOLID FILMS, v.517, no.3, pp 1156 - 1160
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- THIN SOLID FILMS
- Volume
- 517
- Number
- 3
- Start Page
- 1156
- End Page
- 1160
- ISSN
- 0040-6090
- Abstract
- Thin films (<30 nm) of titanium carbide (TiC) are coated on carbon nanotubes (CNTs), directly grown on nano-sized (similar to 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. (C) 2008 Elsevier B.V. All rights reserved.
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Related Researcher
- PARK, JIN SEOK
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)