Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons

We demonstrate that thermoelectric properties of graphene nanoribbons can be dramatically improved by introducing nanopores. In monolayer graphene, this increases the electronic thermoelectric figure of merit ZT e from 0.01 to 0.5. The largest values of ZT e are found when a nanopore is introduced i...

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Main Authors:	Sadeghi, Hatef, Sangtarash, Sara, Lambert, Colin J
Format:	Online
Language:	English
Published:	Beilstein-Institut 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4464451/

id	pubmed-4464451
recordtype	oai_dc
spelling	pubmed-44644512015-07-13 Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons Sadeghi, Hatef Sangtarash, Sara Lambert, Colin J Full Research Paper We demonstrate that thermoelectric properties of graphene nanoribbons can be dramatically improved by introducing nanopores. In monolayer graphene, this increases the electronic thermoelectric figure of merit ZT e from 0.01 to 0.5. The largest values of ZT e are found when a nanopore is introduced into bilayer graphene, such that the current flows from one layer to the other via the inner surface of the pore, for which values as high as ZT e = 2.45 are obtained. All thermoelectric properties can be further enhanced by tuning the Fermi energy of the leads. Beilstein-Institut 2015-05-18 /pmc/articles/PMC4464451/ /pubmed/26171293 http://dx.doi.org/10.3762/bjnano.6.119 Text en Copyright © 2015, Sadeghi et al; licensee Beilstein-Institut. http://www.beilstein-journals.org/bjnano This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (http://www.beilstein-journals.org/bjnano)
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Sadeghi, Hatef Sangtarash, Sara Lambert, Colin J
spellingShingle	Sadeghi, Hatef Sangtarash, Sara Lambert, Colin J Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
author_facet	Sadeghi, Hatef Sangtarash, Sara Lambert, Colin J
author_sort	Sadeghi, Hatef
title	Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
title_short	Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
title_full	Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
title_fullStr	Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
title_full_unstemmed	Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
title_sort	enhancing the thermoelectric figure of merit in engineered graphene nanoribbons
description	We demonstrate that thermoelectric properties of graphene nanoribbons can be dramatically improved by introducing nanopores. In monolayer graphene, this increases the electronic thermoelectric figure of merit ZT e from 0.01 to 0.5. The largest values of ZT e are found when a nanopore is introduced into bilayer graphene, such that the current flows from one layer to the other via the inner surface of the pore, for which values as high as ZT e = 2.45 are obtained. All thermoelectric properties can be further enhanced by tuning the Fermi energy of the leads.
publisher	Beilstein-Institut
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4464451/
_version_	1613234783086706688

Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons

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