Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/85191
Type: Artigo de periódico
Title: Field Emission Properties Of The Graphenated Carbon Nanotube Electrode
Author: Zanin H.
Ceragioli H.J.
Peterlevitz A.C.
Baranauskas V.
Marciano F.R.
Lobo A.O.
Abstract: Reduced graphene oxide-coated carbon nanotubes (RGO-CNT) electrodes have been prepared by hot filament chemical vapour deposition system in one-step growth process. We studied RGO-CNT electrodes behaviour as cold cathode in field emission test. Our results show that RGO-CNT retain the low threshold voltage typical of CNTs, but with greatly improved emission current stability. The field emission enhancement value is significantly higher than that expected being caused by geometric effect (height divided by the radius of nanotube). This suggested that the field emission of this hybrid structure is not only from a single tip, but eventually it is from several tips with contribution of graphene nanosheets at CNT's walls. This phenomenon explains why the graphenated carbon nanotubes do not burn out as quickly as CNT does until emission ceases completely. These preliminaries results make nanocarbon materials good candidates for applications as electron sources for several devices.
Editor: Elsevier
Rights: fechado
Identifier DOI: 10.1016/j.apsusc.2014.10.102
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84920673427&partnerID=40&md5=4f2cd6ec8312431d4d8d5c57b24d3cd0
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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