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Altering the Properties of Graphene on Cu(111) by Intercalation of Potassium Bromide

Schulzendorf, Mathias and Hinaut, Antoine and Kisiel, Marcin and Jöhr, Res and Pawlak, Rémy and Restuccia, Paolo and Meyer, Ernst and Righi, Maria Clelia and Glatzel, Thilo. (2019) Altering the Properties of Graphene on Cu(111) by Intercalation of Potassium Bromide. ACS Nano, 13 (5). pp. 5485-5492.

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Abstract

The catalytic growth on transition metal surfaces provides a clean and controllable route to obtain defect-free, monocrystalline graphene. However, grapheneâEurotms optical and electronic properties are diminished by the interaction with the metal substrate. One way to overcome this obstacle is the intercalation of atoms and molecules decoupling the graphene and restoring its electronic structure. We applied noncontact atomic force microscopy to study the structural and electric properties of graphene on clean Cu(111) and after the adsorption of KBr or NaCl. By means of Kelvin probe force microscopy, a change in graphene's work function has been observed after the deposition of KBr, indicating a changed graphene-substrate interaction. Further measurements of single-electron charging events as well as X-ray photoelectron spectroscopy confirmed an electronic decoupling of the graphene islands by KBr intercalation. The results have been compared with density functional theory calculations, supporting our experimental findings.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Glatzel, Thilo and Schulzendorf, Mathias and Hinaut, Antoine and Kisiel, Marcin and Jöhr, Res and Pawlak, Rémy and Meyer, Ernst
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:1936-0851
e-ISSN:1936-086X
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:25 Mar 2020 15:05
Deposited On:25 Mar 2020 15:05

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