About: Surface refinement and electronic properties of graphene layers grown on copper substrate: An XPS, UPS and EELS study

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The present work focuses on the assessment of two surface treatment procedures employed under ultra high vacuum conditions in order to obtain atomically clean graphene layers without disrupting the morphology and the two dimensional character of the films. Graphene layers grown by chemical vapor deposition on polycrystalline Cu were stepwise annealed up to 750 °C or treated by mild Ar+ sputtering. The effectiveness of both methods and the changes that they induce on the surface morphology and electronic structure of the films were systematically studied by X-ray photoelectron spectroscopy, and electron energy loss spectroscopy. Ultraviolet photoelectron spectroscopy was employed for the study of the electronic properties of the as received sample and in combination with the work function measurements, indicated the hybridization of the C–π network with Cu d-orbitals. Mild Ar+ sputtering sessions were found to disrupt the sp2 network and cause amorphisation of the graphitic carbon. The present work focuses on the assessment of two surface treatment procedures employed under ultra high vacuum conditions in order to obtain atomically clean graphene layers without disrupting the morphology and the two dimensional character of the films. Graphene layers grown by chemical vapor deposition on polycrystalline Cu were stepwise annealed up to 750 °C or treated by mild Ar+ sputtering. The effectiveness of both methods and the changes that they induce on the surface morphology and electronic structure of the films were systematically studied by X-ray photoelectron spectroscopy, and electron energy loss spectroscopy. Ultraviolet photoelectron spectroscopy was employed for the study of the electronic properties of the as received sample and in combination with the work function measurements, indicated the hybridization of the C–π network with Cu d-orbitals. Mild Ar+ sputtering sessions were found to disrupt the sp2 network and cause amorphisation of the graphitic carbon. (en)
Title	Surface refinement and electronic properties of graphene layers grown on copper substrate: An XPS, UPS and EELS study Surface refinement and electronic properties of graphene layers grown on copper substrate: An XPS, UPS and EELS study (en)
skos:prefLabel	Surface refinement and electronic properties of graphene layers grown on copper substrate: An XPS, UPS and EELS study Surface refinement and electronic properties of graphene layers grown on copper substrate: An XPS, UPS and EELS study (en)
skos:notation	RIV/61388955:_____/11:00362878!RIV12-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA400400911), P(LC510), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	23
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Kalbáč, Martin Frank, Otakar
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	233499
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/11:00362878
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	graphene; XPS; EELS (en)
http://linked.open.../riv/klicoveSlovo	graphene EELS XPS
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[1160714A6729]
http://linked.open...i/riv/nazevZdroje	Applied Surface Science
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of nanotechnology and materials for nanoelectronics Spectroscopy and spectroelectrochemistry of chemically doped carbon nanostructures
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	257
http://linked.open...iv/tvurceVysledku	Kalbáč, Martin Frank, Otakar Galiotis, C. Karakalos, S. Ravani, F. Siokou, A.
http://linked.open...ain/vavai/riv/wos	000293883400016
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0169-4332
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.apsusc.2011.06.017

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