Show simple item record

dc.contributor.authorShearer, Cameron
dc.contributor.authorFahy, Adam
dc.contributor.authorBarr, Matthew G
dc.contributor.authorMoore, Katherine E
dc.contributor.authorDastoor, Paul
dc.contributor.authorShapter, Joseph George
dc.date.accessioned2012-12-14T01:03:14Z
dc.date.available2012-12-14T01:03:14Z
dc.date.issued2012
dc.identifier.citationShearer, C., Fahy, A., Barr, M.G., Moore, K.E., Dastoor, P.C. and Shapter, J.G., 2012. Field emission from single-, double-, and multi-walled carbon nanotubes chemically attached to silicon. Journal of Applied Physics, 111, 044326.en
dc.identifier.issn0021-8979
dc.identifier.urihttp://hdl.handle.net/2328/26524
dc.description.abstractThe chemical attachment and field emission (FE) properties of single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (DWCNTs), and multi-walled carbon nanotubes (MWCNTs) chemically attached to a silicon substrate have been investigated. A high density of CNTs was revealed by atomic force microscopy imaging with orientation varying with CNT type. Raman spectroscopy was used to confirm the CNT type and diameter on the surfaces. The field emission properties of the surfaces were studied and both current-voltage and Fowler-Nordheim plots were obtained. The SWCNTs exhibited superior FE characteristics with a turn-on voltage (Eto) of 1.28 V μm−1 and electric field enhancement factor (β) of 5587. The DWCNT surface showed an Eto of 1.91 V μm−1 and a β of 4748, whereas the MWCNT surface exhibited an Eto of 2.79 V μm−1 and a β of 3069. The emission stability of each CNT type was investigated and it was found that SWCNTs produced the most stable emission. The differences between the FE characteristics and stability are explained in terms of the CNT diameter, vertical alignment, and crystallinity. The findings suggest that strength of substrate adhesion and CNT crystallinity play a major role in FE stability. Comparisons to other FE studies are made and the potential for device application is discussed.en
dc.language.isoen
dc.publisherAmerican Institute of Physicsen
dc.subjectPhysicsen
dc.subjectPhysical chemistryen
dc.subjectCarbon nanotubeen
dc.titleField emission from single-, double-, and multi-walled carbon nanotubes chemically attached to siliconen
dc.typeArticleen
dc.rights.licenseIn Copyright
local.contributor.authorOrcidLookupShapter, Joseph George: https://orcid.org/0000-0002-4000-2751en_US
local.contributor.authorOrcidLookupShearer, Cameron: https://orcid.org/0000-0002-8192-3696en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record