dc.contributor.author
Cao, Qing
dc.contributor.author
Kreßler, Mira
dc.contributor.author
Hußmann, Marleen
dc.contributor.author
Hu, Yalei
dc.contributor.author
Kusch, Patryk
dc.contributor.author
Eigler, Siegfried
dc.date.accessioned
2024-04-22T07:54:22Z
dc.date.available
2024-04-22T07:54:22Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/42469
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-42194
dc.description.abstract
Tuning the optoelectronic properties of monolayer MoS2 (1L-MoS2) is highly desired for optoelectronic applications. Gaining profound insights into the fundamental mechanisms that govern optoelectronic properties is of utmost significance. Here, we demonstrate that the photoluminescence (PL) of 1L-MoS2 can be modulated by photochemically functionalized graphene (F-G), which is covalently modified by oligophenyl groups. More importantly, the layer stacking sequence of F-G and 1L-MoS2 brings different interface structures, resulting in a significant difference in the PL enhancement. MoS2 supported by F-G (F-G/MoS2) has a 5-fold PL enhancement, while it only shows a 1.8-fold PL enhancement if stacked underneath F-G (MoS2/F-G). Accordingly, the results indicate that the oligophenyl groups in F-G/MoS2 not only have a p-doping effect on MoS2 but also largely prevent electron donation from the graphene basal plane with an enlarged interlayer distance of 8 nm. Consequently, the PL enhancement is lost with the thermal defunctionalization of F-G. Thus, we conclude that the functional groups can be considered as separate molecular components with the vertical arrangement in the functionalized heterostructure system. The photoactive graphene acts as a template for perpendicular molecular alignment in the heterointerface construction. The F-G/MoS2 heterostructures bring new perspectives to the design and investigation of optoelectronic devices.
en
dc.format.extent
10 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Functionalization
en
dc.subject
Heterostructures
en
dc.subject
Raman spectroscopy
en
dc.subject
Two dimensional materials
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
dc.title
Photoluminescence Modulation of Graphene/MoS2 Heterostructures Separated by Laser-Induced Functionalization
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1021/acs.chemmater.3c03166
dcterms.bibliographicCitation.journaltitle
Chemistry of Materials
dcterms.bibliographicCitation.number
7
dcterms.bibliographicCitation.pagestart
3267
dcterms.bibliographicCitation.pageend
3276
dcterms.bibliographicCitation.volume
36
dcterms.bibliographicCitation.url
https://doi.org/10.1021/acs.chemmater.3c03166
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Chemie und Biochemie
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refubium.funding
ACS Publications
refubium.note.author
Die Publikation wurde aus Open Access Publikationsgeldern der Freien Universität Berlin gefördert.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1520-5002