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dc.contributor.authorAzpeitia-Urkia, Jones_ES
dc.contributor.authorKrajewska, Aleksandraes_ES
dc.contributor.authorMartínez-Orellana, Lidiaes_ES
dc.contributor.authorMartínez, José I.es_ES
dc.contributor.authorGutiérrez, A.es_ES
dc.contributor.authorOberda, Krzysztofes_ES
dc.contributor.authorPasternak, Iwonaes_ES
dc.contributor.authorMierczyk, Zygmuntes_ES
dc.contributor.authorHuttel, Yveses_ES
dc.contributor.authorMartín-Gago, José A.es_ES
dc.contributor.authorGarcía-Hernández, M.es_ES
dc.contributor.authorStrupinski, Wlodekes_ES
dc.contributor.authorLópez, María Franciscaes_ES
dc.contributor.authorMunuera, C.es_ES
dc.identifier.citationFuerzas y Túnel (2016)es_ES
dc.descriptionTrabajo presentado en la conferencia Fuerzas y Túnel (FyT2016), celebrada en Girona del 5 al 7 de septiembre de 2016.es_ES
dc.description.abstractModifying in a controlled way the electronic properties of graphene (often denoted as band engineering) is fundamental to create functional devices based on this material. This field has experienced an increased activity in the last few years as properties such as the carrier concentration and mobility can be tuned by depositing different kind of chemical species onto graphene, intercalating atoms in its structure or by simply changing the substrate where graphene is deposited on [1,2,3]. In this work we focus on the doping of graphene with gold nanoparticles (NPs), deposited using two different methodologies. The first one is a chemical doping, based on the formation of Au NPs from a solution containing HAuCl 4 [4,5], in which the doping mechanism involves charge transfer between the Au ions and the graphene. The second procedure consists on Au NPs deposition by means of a sputter gas aggregation source in ultra-high vacuum (UHV), in which the doping procedure relies mainly on the electrostatic interaction between NPs and graphene. Kelvin Probe Microscopy (KPM) measurements have been performed to study the modification of the surface potential as a function of Au NPs coverage for both series of samples, and explore its possible relation with parameters such as mobility and carrier concentration, extracted from macroscopic resistivity measurements. First-principles calculations have been carried out for varying Au NPs sizes and concentrations to understand the differences experimentally observed.es_ES
dc.titleAu NPs on graphene: influence of the deposition method on the doping effectes_ES
dc.typepóster de congresoes_ES
oprm.item.hasRevisionno ko 0 false*
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