Effect of O-2(+), H-2(+) + O-2(+), and N-2(+) + O-2(+) ion-beam irradiation on the field emission properties of carbon nanotubes

dc.creatorAcuna, JJS
dc.creatorEscobar, M
dc.creatorGoyanes, SN
dc.creatorCandal, RJ
dc.creatorZanatta, AR
dc.creatorAlvarez, F
dc.date2011
dc.date37043
dc.date2014-07-30T17:11:08Z
dc.date2015-11-26T16:48:41Z
dc.date2014-07-30T17:11:08Z
dc.date2015-11-26T16:48:41Z
dc.date.accessioned2018-03-28T23:35:11Z
dc.date.available2018-03-28T23:35:11Z
dc.identifierJournal Of Applied Physics. Amer Inst Physics, v. 109, n. 11, 2011.
dc.identifier0021-8979
dc.identifierWOS:000292214700140
dc.identifier10.1063/1.3593269
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/64373
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/64373
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1275222
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionThe effect of O-2(+), H-2(+) + O-2(+), and N-2(+) + O-2(+) ion-beam irradiation of carbon nanotubes (CNTs) films on the chemical and electronic properties of the material is reported. The CNTs were grown by the chemical vapor deposition technique (CVD) on silicon TiN coated substrates previously decorated with Ni particles. The Ni decoration and TiN coating were successively deposited by ion-beam assisted deposition (IBAD) and afterwards the nanotubes were grown. The whole deposition procedure was performed in situ as well as the study of the effect of ion-beam irradiation on the CNTs by x-ray photoelectron spectroscopy (XPS). Raman scattering, field-effect emission gun scanning electron microscopy (FEG-SEM), and field emission (FE) measurements were performed ex situ. The experimental data show that: (a) the presence of either H(2)(+)or N-2(+) ons in the irradiation beam determines the oxygen concentration remaining in the samples as well as the studied structural characteristics; (b) due to the experimental conditions used in the study, no morphological changes have been observed after irradiation of the CNTs; (c) the FE experiments indicate that the electron emission from the CNTs follows the Fowler-Nordheim model, and it is dependent on the oxygen concentration remaining in the samples; and (d) in association with FE results, the XPS data suggest that the formation of terminal quinone groups decreases the CNTs work function of the material. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3593269]
dc.description109
dc.description11
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionUBA, Argentina [IP X191]
dc.descriptionCONICET [PIP 5215, 5959]
dc.descriptionANPCyT [PICT 10-25834, 06-10621]
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFAPESP [05/53926-1]
dc.descriptionUBA, Argentina [IP X191]
dc.descriptionCONICET [PIP 5215, 5959]
dc.descriptionANPCyT [PICT 10-25834, 06-10621]
dc.descriptionCAPES [CAPES - SPU 011/02]
dc.languageen
dc.publisherAmer Inst Physics
dc.publisherMelville
dc.publisherEUA
dc.relationJournal Of Applied Physics
dc.relationJ. Appl. Phys.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectElectron Field-emission
dc.subjectBeam-assisted Deposition
dc.subjectCarbon Nanotube Arrays
dc.subjectFilms
dc.subjectNanostructures
dc.subjectNitrogen
dc.subjectDiamond
dc.subjectEmitters
dc.subjectNoise
dc.subjectCvd
dc.titleEffect of O-2(+), H-2(+) + O-2(+), and N-2(+) + O-2(+) ion-beam irradiation on the field emission properties of carbon nanotubes
dc.typeArtículos de revistas


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