- Title
- Improved field emission stability from single-walled carbon nanotubes chemically attached to silicon
- Creator
- Shearer, Cameron J.; Fahy, Adam; Barr, Matthew; Dastoor, Paul C.; Shapter, Joseph G.
- Relation
- Nanoscale Research Letters Vol. 7
- Publisher Link
- http://dx.doi.org/10.1186/1556-276X-7-432
- Publisher
- SpringerOpen
- Resource Type
- journal article
- Date
- 2012
- Description
- 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.
- Subject
- single-walled carbon nanotubes; chemical attachment; field emission; field emission stability; nanoelectronics
- Identifier
- http://hdl.handle.net/1959.13/1061833
- Identifier
- uon:17015
- Identifier
- ISSN:1931-7573
- Rights
- This work is shared under a Creative Commons Licence - Attribution-NonCommercial 2.5 Generic (CC BY-NC 2.5). http://creativecommons.org/licenses/by-nc/2.5/
- Language
- eng
- Full Text
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