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Título : Influence of the iron oxide nanoparticles on the electro-optical properties of graphite and few-layers graphene
Autor : Champi, A.
Bazan Aguilar, A.
Camilo, M.
Quintana, Maria
Palabras clave : Iron oxides nanoparticles;Graphite;Few-layers graphene;EPR;Raman
Fecha de publicación : feb-2016
Editorial : Elsevier Ltd
URI Relacionado: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963631812&doi=10.1016%2fj.matpr.2016.02.036&partnerID=40&md5=7a4fea68435fdcff9f07c9e10558f1b8
Resumen : Spherical iron oxide nanostructures (FexOy NPs) are obtained by laser ablation technique, which are formed primarily by α-hematite (α- Fe2O3), γ-hematite (γ-Fe2O3) and goethite (FeOOH) phases, the dimensions of which are among the 30-60 nm by using the Scanning Electronic Mycroscope (SEM) analysis. These were incorporated superficially on graphite microflakes (MFG, microflakes of graphite) and / or a few layers of graphene microflakes (FLG, few-layer graphene), through a thermal process, in order to observe their influence on the electro-optical properties on MFG and FLG, tested by Raman microspectroscopy, we detect a correlation of Raman shifts before and after doping. This is explained as a change in the dispersion of two phonons at the edges of the C-C chains forming the FLG against the formation of surface defects due to interaction with FexOy NPs after insertion. Finally, a study of the position, the FWHM, the ration between the intensities and the areas of the G and 2D bands was made in all samples with two Raman lasers (λ = 534 nm and 422 nm).
URI : http://cybertesis.uni.edu.pe/handle/uni/3545
ISSN : 22147853
Correo electrónico : ana.champi@ufabc.edu.br
Derechos: info:eu-repo/semantics/embargoedAccess
Aparece en las colecciones: Instituto General de Investigación



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