Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1671722 | Thin Solid Films | 2008 | 5 Pages |
Abstract
Carbon nanotubes (CNTs) are synthesized directly on an electrically conducting cobalt (Co) tip of 1 μm in diameter, without any additional buffer or catalyst layer, through inductively coupled plasma-chemical vapor deposition (ICP-CVD). The nanostructures, morphologies, and crystalline structures of all the CNTs are analyzed through field emission SEM, high-resolution TEM, and Raman spectroscopy. Compared with the conventional emitter, which has a configuration of CNTs/Co(catalyst)/TiN(buffer)/W-tip, the CNTs/Co-tip field emitter proposed in this work show a noticeably improved performance in the electron-emission characteristics as well as in the stability of the emission current due to prolonged operation (up to 50 h).
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Jong-Pil Kim, Young-Kwang Kim, Chang-Kyun Park, Hae-Young Choi, Jong-Uk Kim, Jin-Seok Park,