Abstract
Here, we demonstrate the simple fabrication of a single-walled carbon nanotube (SWCNT) field emission electrode which shows excellent field emission characteristics and remarkable field emission stability without requiring posttreatment. Chemically functionalized SWCNTs were chemically attached to a silicon substrate. The chemical attachment led to vertical alignment of SWCNTs on the surface. Field emission sweeps and Fowler-Nordheim plots showed that the Si-SWCNT electrodes field emit with a low turn-on electric field of 1.5 V μm-1 and high electric field enhancement factor of 3,965. The Si-SWCNT electrodes were shown to maintain a current density of >740 μA cm-2 for 15 h with negligible change in applied voltage. The results indicate that adhesion strength between the SWCNTs and substrate is a much greater factor in field emission stability than previously reported.
Original language | English |
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Article number | 432 |
Pages (from-to) | 432-1-432-4 |
Number of pages | 4 |
Journal | Nanoscale Research Letters |
Volume | 7 |
DOIs | |
Publication status | Published - 1 Aug 2012 |
Keywords
- Chemical attachment
- Field emission
- Field emission stability
- Nanoelectronics
- Single-walled carbon nanotubes