Disentangling contributions of point and line defects in the Raman spectra of graphene-related materials

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dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorAdo Jorio de Vasconcelos
dc.creatorMateus Gomes da Silva
dc.creatorErlon Henrique Martins Ferreira
dc.creatorFerdinand Hof
dc.creatorKaterina Kampioti
dc.creatorKai Huang
dc.creatorAlain Pénicaud
dc.creatorCarlos Alberto Achete
dc.creatorRodrigo Barbosa Capaz
dc.date.accessioned2022-06-15T12:34:27Z
dc.date.accessioned2025-09-09T00:39:33Z
dc.date.available2022-06-15T12:34:27Z
dc.date.issued2017-02-24
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1088/2053-1583/aa5e77
dc.identifier.issn2053-1583
dc.identifier.urihttps://hdl.handle.net/1843/42523
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartof2D Materials
dc.rightsAcesso Aberto
dc.subjectEspectroscopia de Raman
dc.subjectDefeitos pontuais
dc.subject.otherRaman spectra
dc.subject.otherDefeitos pontuais
dc.titleDisentangling contributions of point and line defects in the Raman spectra of graphene-related materials
dc.typeArtigo de periódico
local.citation.epage12
local.citation.issue2
local.citation.spage1
local.citation.volume4
local.description.resumoThe transition from graphene to a fully disordered sp2 carbon material can be idealized by either cutting graphene into smaller and smaller pieces, or adding more and more point defects. In other words, from the dimensionality standpoint, defects in two-dimensional (2D) systems can be either one- (1D) or zero-dimensional (0D). From an application point of view, both in terms of bottom-up as well as top-down approaches, the discrimination between these two structural disorder in two-dimensional systems is urgently desired. In graphene, both types of defects produce changes in the Raman spectrum, but identifying separately the contribution from each defect-type has not yet been achieved. Here we show that a diagram can be built for disentangling contributions of pointlike and line-like defects to the Raman spectra of graphene-related materials embracing, from the topology point of view, all possible structures from perfect to fully disordered sp2 bonded carbons. Two sets of graphene-related samples, produced by well-established protocols that generate either 0D or 1D defects in a controlled way, are analysed with our model and used to parameterize the limiting values of the phase space. We then discuss the limitations and apply our new methodology to analyse the structure of two-dimensional nanocarbons generated from renewable gas, used to produce inks and conducting coatings.
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0002-0943-6148
local.identifier.orcidhttps://orcid.org/0000-0001-8614-2867
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.1088/2053-1583/aa5e77

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