Hybrid Doping of Few-Layer Graphene via a Combination of Intercalation and Surface Doping

Handle URI:
http://hdl.handle.net/10754/623765
Title:
Hybrid Doping of Few-Layer Graphene via a Combination of Intercalation and Surface Doping
Authors:
Mansour, Ahmed ( 0000-0002-3411-6808 ) ; Kirmani, Ahmad R. ( 0000-0002-8351-3762 ) ; Barlow, Stephen; Marder, Seth R.; Amassian, Aram ( 0000-0002-5734-1194 )
Abstract:
Surface molecular doping of graphene has been shown to modify its work function and increase its conductivity. However, the associated shifts in work function and increases in carrier concentration are highly coupled and limited by the surface coverage of dopant molecules on graphene. Here we show that few-layer graphene (FLG) can be doped using a hybrid approach, effectively combining surface doping by larger (metal-)organic molecules, while smaller molecules, such as Br2 and FeCl3, intercalate into the bulk. Intercalation tunes the carrier concentration more effectively, whereas surface doping of intercalated FLG can be used to tune its work function without reducing the carrier mobility. This multi-modal doping approach yields a very high carrier density and tunable work function for FLG, demonstrating a new versatile platform for fabricating graphene-based contacts for electronic, optoelectronic and photovoltaic applications.
KAUST Department:
KAUST Solar Center (KSC); Physical Sciences and Engineering (PSE) Division
Citation:
Mansour AE, Kirmani AR, Barlow S, Marder SR, Amassian A (2017) Hybrid Doping of Few-Layer Graphene via a Combination of Intercalation and Surface Doping. ACS Applied Materials & Interfaces. Available: http://dx.doi.org/10.1021/acsami.7b02886.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
23-May-2017
DOI:
10.1021/acsami.7b02886
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
The authors acknowledge Dr. Marcel Said for the early discussion of the hybrid doping approach, Dr. Yadong Zhang for synthesis of the Mo dopant, and Mrs. Lubna Jamshaid for her logistical support. This work was supported by King Abdullah University of Science and Technology (KAUST), and Department of the Navy, Office of Naval Research Award No. N00014-14-1-0126.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acsami.7b02886
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; KAUST Solar Center (KSC)

Full metadata record

DC FieldValue Language
dc.contributor.authorMansour, Ahmeden
dc.contributor.authorKirmani, Ahmad R.en
dc.contributor.authorBarlow, Stephenen
dc.contributor.authorMarder, Seth R.en
dc.contributor.authorAmassian, Aramen
dc.date.accessioned2017-05-31T10:09:30Z-
dc.date.available2017-05-31T10:09:30Z-
dc.date.issued2017-05-23en
dc.identifier.citationMansour AE, Kirmani AR, Barlow S, Marder SR, Amassian A (2017) Hybrid Doping of Few-Layer Graphene via a Combination of Intercalation and Surface Doping. ACS Applied Materials & Interfaces. Available: http://dx.doi.org/10.1021/acsami.7b02886.en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.doi10.1021/acsami.7b02886en
dc.identifier.urihttp://hdl.handle.net/10754/623765-
dc.description.abstractSurface molecular doping of graphene has been shown to modify its work function and increase its conductivity. However, the associated shifts in work function and increases in carrier concentration are highly coupled and limited by the surface coverage of dopant molecules on graphene. Here we show that few-layer graphene (FLG) can be doped using a hybrid approach, effectively combining surface doping by larger (metal-)organic molecules, while smaller molecules, such as Br2 and FeCl3, intercalate into the bulk. Intercalation tunes the carrier concentration more effectively, whereas surface doping of intercalated FLG can be used to tune its work function without reducing the carrier mobility. This multi-modal doping approach yields a very high carrier density and tunable work function for FLG, demonstrating a new versatile platform for fabricating graphene-based contacts for electronic, optoelectronic and photovoltaic applications.en
dc.description.sponsorshipThe authors acknowledge Dr. Marcel Said for the early discussion of the hybrid doping approach, Dr. Yadong Zhang for synthesis of the Mo dopant, and Mrs. Lubna Jamshaid for her logistical support. This work was supported by King Abdullah University of Science and Technology (KAUST), and Department of the Navy, Office of Naval Research Award No. N00014-14-1-0126.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsami.7b02886en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsami.7b02886.en
dc.subjectFew-layer grapheneen
dc.subjecttransparent conducting electrodeen
dc.subjectintercalationen
dc.subjectmolecular dopingen
dc.subjectwork functionen
dc.subjectelectrical transporten
dc.titleHybrid Doping of Few-Layer Graphene via a Combination of Intercalation and Surface Dopingen
dc.typeArticleen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.eprint.versionPost-printen
dc.contributor.institutionCenter for Organic Photonics & Electronics and School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USAen
kaust.authorMansour, Ahmeden
kaust.authorKirmani, Ahmad R.en
kaust.authorAmassian, Aramen
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