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Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 39: Poster Tuesday: 2D Materials

O 39.10: Poster

Dienstag, 2. April 2019, 18:00–20:00, Poster D

Preparation of Graphene Bilayers on Platinum by Sequential Chemical Vapor DepositionJohannes Halle, •Alexander Mehler, Nicolas Néel, and Jörg Kröger — Institut für Physik, Technische Universität Ilmenau, Ilmenau, Germany

A cheap and flexible method is introduced that enables the epitaxial growth of bilayer graphene on Pt(111) by sequential chemical vapor deposition. Extended regions of two stacked graphene sheets are obtained by, first, the thermal decomposition of ethylene and the subsequent formation of graphene. In the second step, a sufficiently thick Pt film buries the first graphene layer and acts as a platform for the fabrication of the second graphene layer in the third step. A final annealing process then leads to the diffusion of the first graphene sheet to the surface until the bilayer stacking with the second sheet is accomplished. Scanning tunneling microscopy unravels the successful growth of bilayer graphene and elucidates the origin of moiré patterns.

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