Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 42: Poster Session II (Nanostructures at surfaces: arrays; Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: Other; Nanostructures at surfaces: Wires, tubes; Metal substrates: Adsorption of O and/or H; Metal substrates: Clean surfaces; Metal substrates: Adsorption of organic/bio moledules; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsorption of inorganic molecules; Metal substrates: Epitaxy and growth; Heterogeneous catalysis; Surface chemical reactions; Ab-initio approaches to excitations in condensed matter; Organic, polymeric, biomolecular films– also with adsorbates; Particles and clusters)
O 42.10: Poster
Mittwoch, 25. März 2009, 17:45–20:30, P2
One-dimensional Structure of Boron Nitride on Chromium (110): A Study of the Growth of Boron Nitride by Chemical Vapour Deposition of Borazine — •Frank Müller1, Hermann Sachdev2, and Stefan Hüfner1 — 1Institut für Experimentalphysik, Universität des Saarlandes, 66041 Saarbrücken — 2Institut für Anorganische Chemie, Universität des Saarlandes, 66041 Saarbrücken
In a recent sudy [1], the nucleation and growth of boron nitride films on a Chromium (110) surface by thermal decomposition of borazine, (HBNH)3, was investigated by low energy electron diffraction (LEED), X-ray photoelectron spectroscopy (XPS) and X-ray photoelectron diffraction (XPD). The boron nitride film forms a chemically non-uniform one-dimensional superstructure with short range order along the [1-10] direction and long range order along [001]. Also the thermal stability of the resulting BN film was investigated and a chemical reaction with the substrate was observed leading to the formation of Cr-B- and Cr-N- bonds at the interface, indicating the onset of the formation of hard boride and nitride phases in the system Cr-B-N.
[1] F. Müller, S. Hüfner, H. Sachdev, Surf. Sci. 602 (2008) 3467