Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes

The effect of O2+, H2+ O 2+, and N2+ O2 + 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 pa...

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Autores principales:	Escobar, Mariano Martín, Goyanes, Silvia Nair, Candal, Roberto Jorge, Alvarez, Fernando
Publicado:	2011
Materias:	Chemical vapor Coated substrates Ex situ Experimental conditions Experimental data FEG-SEM Field emission measurements Field emission property Field-effect Fowler-Nordheim In-situ Ion beam irradiation Morphological changes NI particles Oxygen concentrations Quinone groups Structural characteristics TiN coating XPS data Carbon nanotubes Chemical vapor deposition Electron emission Electronic properties Field emission Ion beams Ions Oxygen Photoelectron spectroscopy Scanning electron microscopy Titanium nitride X ray photoelectron spectroscopy Irradiation
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v109_n11_p_Acua http://hdl.handle.net/20.500.12110/paper_00218979_v109_n11_p_Acua
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00218979_v109_n11_p_Acua
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spelling	paper:paper_00218979_v109_n11_p_Acua2023-06-08T14:42:48Z Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes Escobar, Mariano Martín Goyanes, Silvia Nair Candal, Roberto Jorge Alvarez, Fernando Chemical vapor Coated substrates Ex situ Experimental conditions Experimental data FEG-SEM Field emission measurements Field emission property Field-effect Fowler-Nordheim In-situ Ion beam irradiation Morphological changes NI particles Oxygen concentrations Quinone groups Structural characteristics TiN coating XPS data Carbon nanotubes Chemical vapor deposition Electron emission Electronic properties Field emission Ion beams Ions Oxygen Photoelectron spectroscopy Scanning electron microscopy Titanium nitride X ray photoelectron spectroscopy Irradiation The effect of O2+, H2+ O 2+, and N2+ O2 + 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 H2+ or N2 + ions 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. © 2011 American Institute of Physics. Fil:Escobar, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Candal, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alvarez, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v109_n11_p_Acua http://hdl.handle.net/20.500.12110/paper_00218979_v109_n11_p_Acua
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chemical vapor Coated substrates Ex situ Experimental conditions Experimental data FEG-SEM Field emission measurements Field emission property Field-effect Fowler-Nordheim In-situ Ion beam irradiation Morphological changes NI particles Oxygen concentrations Quinone groups Structural characteristics TiN coating XPS data Carbon nanotubes Chemical vapor deposition Electron emission Electronic properties Field emission Ion beams Ions Oxygen Photoelectron spectroscopy Scanning electron microscopy Titanium nitride X ray photoelectron spectroscopy Irradiation
spellingShingle	Chemical vapor Coated substrates Ex situ Experimental conditions Experimental data FEG-SEM Field emission measurements Field emission property Field-effect Fowler-Nordheim In-situ Ion beam irradiation Morphological changes NI particles Oxygen concentrations Quinone groups Structural characteristics TiN coating XPS data Carbon nanotubes Chemical vapor deposition Electron emission Electronic properties Field emission Ion beams Ions Oxygen Photoelectron spectroscopy Scanning electron microscopy Titanium nitride X ray photoelectron spectroscopy Irradiation Escobar, Mariano Martín Goyanes, Silvia Nair Candal, Roberto Jorge Alvarez, Fernando Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
topic_facet	Chemical vapor Coated substrates Ex situ Experimental conditions Experimental data FEG-SEM Field emission measurements Field emission property Field-effect Fowler-Nordheim In-situ Ion beam irradiation Morphological changes NI particles Oxygen concentrations Quinone groups Structural characteristics TiN coating XPS data Carbon nanotubes Chemical vapor deposition Electron emission Electronic properties Field emission Ion beams Ions Oxygen Photoelectron spectroscopy Scanning electron microscopy Titanium nitride X ray photoelectron spectroscopy Irradiation
description	The effect of O2+, H2+ O 2+, and N2+ O2 + 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 H2+ or N2 + ions 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. © 2011 American Institute of Physics.
author	Escobar, Mariano Martín Goyanes, Silvia Nair Candal, Roberto Jorge Alvarez, Fernando
author_facet	Escobar, Mariano Martín Goyanes, Silvia Nair Candal, Roberto Jorge Alvarez, Fernando
author_sort	Escobar, Mariano Martín
title	Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
title_short	Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
title_full	Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
title_fullStr	Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
title_full_unstemmed	Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes
title_sort	effect of o2+, h2+ o 2+, and n2+ o2 + ion-beam irradiation on the field emission properties of carbon nanotubes
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00218979_v109_n11_p_Acua http://hdl.handle.net/20.500.12110/paper_00218979_v109_n11_p_Acua
work_keys_str_mv	AT escobarmarianomartin effectofo2h2o2andn2o2ionbeamirradiationonthefieldemissionpropertiesofcarbonnanotubes AT goyanessilvianair effectofo2h2o2andn2o2ionbeamirradiationonthefieldemissionpropertiesofcarbonnanotubes AT candalrobertojorge effectofo2h2o2andn2o2ionbeamirradiationonthefieldemissionpropertiesofcarbonnanotubes AT alvarezfernando effectofo2h2o2andn2o2ionbeamirradiationonthefieldemissionpropertiesofcarbonnanotubes
_version_	1768543019420614656

Effect of O2+, H2+ O 2+, and N2+ O2 + ion-beam irradiation on the field emission properties of carbon nanotubes

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