English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/95446
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Enhanced thermoelectric properties in hybrid graphene/boron nitride nanoribbons

AuthorsYang, Kaike; Chen, Yuanping; D'Agosta, Roberto; Xie, Y.; Zhong, Jianxin; Rubio, Angel
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review B 86: 045425 (2012)
AbstractThe thermoelectric properties of hybrid graphene/boron nitride nanoribbons (BCNNRs) are investigated using the nonequilibrium Green's function approach. We find that the thermoelectric figure of merit (ZT) can be remarkably enhanced by periodically embedding hexagonal BN (h-BN) into graphene nanoribbons (GNRs). Compared to pristine GNRs, the ZT for armchair-edged BCNNRs with width index 3p+2 is enhanced 10–20 times, while the ZT of nanoribbons with other widths is enhanced by just 1.5–3 times. As for zigzag-edge nanoribbons, the ZT is enhanced 2–3 times. This improvement comes from the combined increase in the Seebeck coefficient and the reduction in the thermal conductance outweighing the decrease in the electrical conductance. In addition, the effect of the component ratio of h-BN on the thermoelectric transport properties is discussed. These results qualify BCNNRs as a promising candidate for building outstanding thermoelectric devices.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.86.045425
Identifiersdoi: 10.1103/PhysRevB.86.045425
issn: 1098-0121
e-issn: 1550-235X
Appears in Collections:(CFM) Artículos
Files in This Item:
File Description SizeFormat 
Enhanced thermoelectric.pdf1,31 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.