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Finite-size effects on thermionic emission in metal-graphene-nanoribbon contacts

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Mao, Ling-Feng; Li, Xijun; Zhu, C Y; Wang, Z O; Lu, Z H; Yang, J F; Zhu, H W; Liu, Y S; Wang, J Y

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A finite-size effect leads to more electrons to occupy high-energy states in a graphene nanoribbon. Therefore, the thermionic-emission (TE) current density of a metal/graphene nanoribbon changes with its width when the graphene nanoribbon is a semiconductor. This letter demonstrates that the TE current density increases rapidly with the decreasing width of the graphene nanoribbon. It is also found that the finite-size effect on TE current density is more significant at low temperatures.

dc.contributor.authorMao, Ling-Feng
dc.contributor.authorLi, Xijun
dc.contributor.authorZhu, C Y
dc.contributor.authorWang, Z O
dc.contributor.authorLu, Z H
dc.contributor.authorYang, J F
dc.contributor.authorZhu, H W
dc.contributor.authorLiu, Y S
dc.contributor.authorWang, J Y
dc.date.accessioned2015-12-10T23:03:20Z
dc.identifier.issn0741-3106
dc.identifier.urihttp://hdl.handle.net/1885/62127
dc.description.abstractA finite-size effect leads to more electrons to occupy high-energy states in a graphene nanoribbon. Therefore, the thermionic-emission (TE) current density of a metal/graphene nanoribbon changes with its width when the graphene nanoribbon is a semiconductor. This letter demonstrates that the TE current density increases rapidly with the decreasing width of the graphene nanoribbon. It is also found that the finite-size effect on TE current density is more significant at low temperatures.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE Inc)
dc.sourceIEEE Electron Device Letters
dc.subjectKeywords: Finite size effect; Graphene nano-ribbon; High energy; Low temperatures; Nanoribbons; Graphene; Size determination; Thermionic emission; Graphite Finite-size effect; Graphene nanoribbon; Metal/semiconductor contact; Thermionic emission (TE)
dc.titleFinite-size effects on thermionic emission in metal-graphene-nanoribbon contacts
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume31
dc.date.issued2010
local.identifier.absfor100708 - Nanomaterials
local.identifier.ariespublicationf2965xPUB671
local.type.statusPublished Version
local.contributor.affiliationMao, Ling-Feng, Soochow University
local.contributor.affiliationLi, Xijun, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationZhu, C Y, Soochow University
local.contributor.affiliationWang, Z O, Soochow University
local.contributor.affiliationLu, Z H, Soochow University
local.contributor.affiliationYang, J F, Soochow University
local.contributor.affiliationZhu, H W , Zhejiang Sci-Tech University
local.contributor.affiliationLiu, Y S, Zhejiang Sci-Tech University
local.contributor.affiliationWang, J Y, Peking University
local.description.embargo2037-12-31
local.bibliographicCitation.issue5
local.bibliographicCitation.startpage491
local.bibliographicCitation.lastpage493
local.identifier.doi10.1109/LED.2010.2043639
dc.date.updated2016-02-24T08:31:24Z
local.identifier.scopusID2-s2.0-77951879721
CollectionsANU Research Publications

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