Photoemission from single-walled carbon nanotubes

TitlePhotoemission from single-walled carbon nanotubes
Publication TypeJournal Article
Year of Publication2008
AuthorsNojeh, A., K. Ioakeimidi, S. Sheikhaei, and F. R. W. Pease
JournalJournal of Applied Physics
Pagination054308 -054308-6
Date Publishedsep.
Keywordscarbon nanotubes, photoemission

Carbon nanotubes have promising electron emission characteristics. We report on photo-electron emitters made from sparse collections of single-walled carbon nanotubes resting on a silicon dioxide surface. A 266 nm ultraviolet laser was used. The measured emission current suggests a level of optical power absorption of approximately an order of magnitude higher than what is expected purely based on the surface area of the nanotubes; it appears that a more efficient mechanism is at work. We also present simulation results and discuss whether optical antenna effects could provide an insight.


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