Dresden 2011 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.44: Poster
Wednesday, March 16, 2011, 17:30–21:00, P4
Controlled fabrication of nanocrystalline graphene films on insulating substrates — •Nils-Eike Weber1, Rainer Stosch2, Armin Gölzhäuser1, and Andrey Turchanin1 — 1Physik supramolekularer Systeme und Oberflächen, Fakultät für Physik, Universität Bielefeld — 2Physikalisch-Technische Bundesanstalt, Braunschweig
We report on the fabrication and characterization of nanocrystalline graphene films on insulating substrates. Graphenoid (graphene like) carbon nanosheets with a thickness of 1 nm were made by the electron beam induced cross-linking of aromatic self-assembled monolayers. When transferred onto insulating substrates, the graphenoid sheets were converted into nanocrystalline graphene by thermal annealing. We used thermal annealing in an argon atmosphere to produce large area (cm square or larger) films of nanocrystalline graphene with a well defined thickness on silicon oxide wafers and quartz glass. The electrical conductivity was measured at room temperature by four point probe measurements. The structure and chemical composition were studied by X-ray photoelectron and Raman spectroscopies. Since the electrical conductivity, thickness and optical properties of the graphene films can be well controlled, the suggested method opens broad prospects for the fabrication of transparent conductive coating.