Dresden 2009 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 22: Focused Session: Epitaxial Graphene III

O 22.7: Vortrag

Dienstag, 24. März 2009, 12:30–12:45, SCH 251

Synthesis and characterization of graphite monolayers on Ni (111)- and polycrystalline Ni-surfaces — Katharina Kloeckner, Roland J. Koch, Syed-Imad U. Ahmed, and •Juergen A. Schaefer — Institut für Physik and Institut für Mikro- und Nanotechnologien, Technische Universität Ilmenau, P. O. Box 100565, 98684 Ilmenau, Germany

To understand the fundamental surface science related properties of two different substrate surfaces, Ni (111) and polycrystalline Ni, adsorption experiments of CO and propene (C3H6) are investigated. Since the adsorption of CO on metal surfaces has been studied very intensively in the past, a very thorough characterization of the different surfaces studied in this contribution is possible. Simultaneously, CO adsorption is a good reference for residual gas adsorption, which is dominated by CO. Propene has been chosen to study the catalytic dehydrogenation on nickel as well as graphene formation. Different stages of interaction were controlled via High Resolution Electron Energy Loss Spectroscopy (HREELS) and X-ray Photoelectron Spectroscopy (XPS).