Titre:	Charge transport mechanism in chevron-graphene nanoribbons
Auteur(s):	Pereira Júnior, Marcelo Lopes Cunha, Wiliam Ferreira da Sousa Junior, Rafael Timóteo de Giozza, William Ferreira Silva, Geraldo Magela e Ribeiro Júnior, Luiz Antônio
Assunto::	Nanofitas Condutividade elétrica Treliças Polaron Materiais bidimensionais
Date de publication:	24-sep-2020
Editeur:	ACS Publications
Référence bibliographique:	PEREIRA JÚNIOR, Marcelo Lopes et al. Charge transport mechanism in chevron-graphene nanoribbons. The Journal of Physical Chemistry C, v. 124,n. 41, p. 22392−22398, 24 set. 2020. DOI: https://doi.org/10.1021/acs.jpcc.0c06625.
Abstract:	From the moment atomic precision control of the growth process of graphene was achieved, more elaborated carbon allotropes were proposed opening new channels for flat optoelectronics at the nanoscale. A special type of this material presenting a V-shape (or “kinked” pattern) was recently synthesized and named chevron-graphene nanoribbons (C-GNRs). To realize the reach of C-GNRs in developing new applications, the formation and transport of charge carriers in their lattices should be primarily understood. Here, we investigate the static and dynamical properties of quasiparticles in C-GNRs. We study the effects of electron–phonon coupling and doping on the system. We also determine the kind of charge carriers present in C-GNR. Two distinct physical pictures for the charge transport were obtained: a delocalized regime of conduction and a regime mediated by charge carriers. These transport regimes are highly dependent on the doping concentration. Importantly, similarities in charge carrier terminal velocities were observed among C-GNRs and standard armchair graphene nanoribbons, which originate from their comparable charge localization profiles that yield quasiparticles with equivalent effective masses.
DOI:	https://doi.org/10.1021/acs.jpcc.0c06625
metadata.dc.relation.publisherversion:	https://pubs.acs.org/doi/10.1021/acs.jpcc.0c06625
Collection(s) :	Artigos publicados em periódicos e afins

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