umu.sePublications
Change search
ReferencesLink to record
Permanent link

Direct link
Electron transport study on functionalized armchair graphene nanoribbons: DFT calculations
Umeå University, Faculty of Science and Technology, Department of Physics. Umeå University, Faculty of Science and Technology, Department of Chemistry. Advanced Materials Department, IPICYT, Camino a la Presa San José 2055, Col. Lomas 4a sección, San Luis Potosí S.L.P., 78216, México. E-mail: flo@ipicyt.edu.mx.
2016 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 6, no 26, 21954-21960 p.Article in journal (Refereed) PublishedText
Abstract [en]

Quantum transport studies are performed on doped and functionalized 8- and 11-armchair graphene nanoribbons (aGNRs) by means of density functional theory. Substitutional doping is performed by introducing boron, nitrogen, oxygen, silicon, phosphorus, and sulfur atoms within the lattice of the aGNRs. Other functional groups such as borane, amine, hydroxyl, thiol, silane, silene, phosphine, and phosphorane groups are also introduced at the nanoribbon's edge. The dopant position and the nanoribbon's width strongly influence the current-voltage characteristics, and generally, the narrow 8-aGNRs and edge-doped 11-aGNRs show deteriorated transport properties, mainly due to the formation of irregular edges that create highly localized states disrupting several conducting bands. On the other hand, the inside-doped 11-aGNRs are barely affected, mainly because these systems preserve the edge's structure, thus edge conduction bands still contribute to the electron transport. Our results suggest that wider graphene nanoribbons could be functionalized at the inner sections without significantly compromising their transport characteristics while retaining the chemical reactivity that characterize doped nanocarbons. Such characteristics are highly desirable in fuel cells where doped graphene is used as a catalyst support or as a metal-free catalyst.

Place, publisher, year, edition, pages
2016. Vol. 6, no 26, 21954-21960 p.
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-118997DOI: 10.1039/c5ra25278dISI: 000371535200075OAI: oai:DiVA.org:umu-118997DiVA: diva2:917661
Available from: 2016-04-07 Created: 2016-04-07 Last updated: 2016-04-07Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Gracia-Espino, Eduardo
By organisation
Department of PhysicsDepartment of Chemistry
In the same journal
RSC Advances
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 134 hits
ReferencesLink to record
Permanent link

Direct link