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Article: The electrical properties of graphene modified by bromophenyl groups derived from a diazonium compound

TitleThe electrical properties of graphene modified by bromophenyl groups derived from a diazonium compound
Authors
Issue Date2012
Citation
Carbon, 2012, v. 50, n. 4, p. 1517-1522 How to Cite?
AbstractGraphene field-effect transistors were fabricated with mechanically exfoliated single-layer graphene (SLG) and bilayer graphene (BLG) sheets and the functionalization effects of bromophenyl groups derived from a diazonium compound on its transfer properties were explored. Spectroscopic and electrical studies reveal that the bromophenyl grafting imposes p-doping to both SLG and BLG. The modification of SLG by bromophenyl groups significantly reduces the hole carrier mobility and the saturation current in SLG transistors, suggesting an increase in both long-range impurity and short-range defect scattering. Unexpectedly, the bromophenyl group functionalization on BLG does not obviously increase both types of scattering, indicating that the BLG is relatively more resistant to charge- or defect-induced scattering. The results indicate that chemical modification is a simple approach to tailor the electrical properties of graphene sheets with different numbers of layers. © 2011 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/298550
ISSN
2020 Impact Factor: 9.594
2020 SCImago Journal Rankings: 2.250

 

DC FieldValueLanguage
dc.contributor.authorDong, Xiaochen-
dc.contributor.authorLong, Qing-
dc.contributor.authorWei, Ang-
dc.contributor.authorZhang, Wenjing-
dc.contributor.authorLi, Lain Jong-
dc.contributor.authorChen, Peng-
dc.contributor.authorHuang, Wei-
dc.date.accessioned2021-04-08T03:08:44Z-
dc.date.available2021-04-08T03:08:44Z-
dc.date.issued2012-
dc.identifier.citationCarbon, 2012, v. 50, n. 4, p. 1517-1522-
dc.identifier.issn0008-6223-
dc.identifier.urihttp://hdl.handle.net/10722/298550-
dc.description.abstractGraphene field-effect transistors were fabricated with mechanically exfoliated single-layer graphene (SLG) and bilayer graphene (BLG) sheets and the functionalization effects of bromophenyl groups derived from a diazonium compound on its transfer properties were explored. Spectroscopic and electrical studies reveal that the bromophenyl grafting imposes p-doping to both SLG and BLG. The modification of SLG by bromophenyl groups significantly reduces the hole carrier mobility and the saturation current in SLG transistors, suggesting an increase in both long-range impurity and short-range defect scattering. Unexpectedly, the bromophenyl group functionalization on BLG does not obviously increase both types of scattering, indicating that the BLG is relatively more resistant to charge- or defect-induced scattering. The results indicate that chemical modification is a simple approach to tailor the electrical properties of graphene sheets with different numbers of layers. © 2011 Elsevier Ltd. All rights reserved.-
dc.languageeng-
dc.relation.ispartofCarbon-
dc.titleThe electrical properties of graphene modified by bromophenyl groups derived from a diazonium compound-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.carbon.2011.11.029-
dc.identifier.scopuseid_2-s2.0-84855861316-
dc.identifier.volume50-
dc.identifier.issue4-
dc.identifier.spage1517-
dc.identifier.epage1522-
dc.identifier.issnl0008-6223-

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