dc.contributor.author
Wang, Zhenping
dc.contributor.author
Yao, Qirong
dc.contributor.author
Neumann, Christof
dc.contributor.author
Börrnert, Felix
dc.contributor.author
Renner, Julian
dc.contributor.author
Kaiser, Ute
dc.contributor.author
Turchanin, Andrey
dc.contributor.author
Zandvliet, Harold J. W.
dc.contributor.author
Eigler, Siegfried
dc.date.accessioned
2020-08-03T12:32:52Z
dc.date.available
2020-08-03T12:32:52Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/27978
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-27731
dc.description.abstract
The thermal decomposition of graphene oxide (GO) is a complex process at the atomic level and not fully understood. Here, a subclass of GO, oxo‐functionalized graphene (oxo‐G), was used to study its thermal disproportionation. We present the impact of annealing on the electronic properties of a monolayer oxo‐G flake and correlated the chemical composition and topography corrugation by two‐probe transport measurements, XPS, TEM, FTIR and STM. Surprisingly, we found that oxo‐G, processed at 300 °C, displays C−C sp3‐patches and possibly C−O−C bonds, next to graphene domains and holes. It is striking that those C−O−C/C−C sp3‐separated sp2‐patches a few nanometers in diameter possess semiconducting properties with a band gap of about 0.4 eV. We propose that sp3‐patches confine conjugated sp2‐C atoms, which leads to the local semiconductor properties. Accordingly, graphene with sp3‐C in double layer areas is a potential class of semiconductors and a potential target for future chemical modifications.
en
dc.format.extent
6 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
electrical transport properties
en
dc.subject
graphene oxide
en
dc.subject
oxo-functionalized graphene
en
dc.subject
semiconductors
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::547 Organische Chemie
dc.title
Identification of semiconductive patches in thermally processed monolayer oxo‐functionalized graphene
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1002/anie.202004005
dcterms.bibliographicCitation.journaltitle
Angewandte Chemie
dcterms.bibliographicCitation.number
32
dcterms.bibliographicCitation.pagestart
13657
dcterms.bibliographicCitation.pageend
13662
dcterms.bibliographicCitation.volume
59
dcterms.bibliographicCitation.url
https://doi.org/10.1002/anie.202004005
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie / Organische Chemie
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refubium.funding
DEAL Wiley
refubium.note.author
Die Publikation wurde von der Freien Universität Berlin finanziert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1521-3757