Dresden 2009 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 25: C/diamond II
HL 25.1: Vortrag
Dienstag, 24. März 2009, 16:00–16:15, POT 51
Functionalizing graphene by embedded boron clusters — Alexander Quandt1, Cem Özdogan2, •Jens Kunstmann3,4, and Holger Fehske1 — 1Institut für Physik der Universität Greifswald, Felix–Hausdorff-Str. 6, 17489 Greifswald, Germany — 2Department of Computer Engineering, Çankaya University, Balgat, 06530 Ankara, Turkey — 3Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart, Germany — 4Institute for Materials Science, Dresden University of Technology, 01062 Dresden, Germany
We present results from an ab initio study of B7 clusters implanted into graphene [1,2]. Our model system consists of an alternating chain of quasiplanar B7 clusters. We show that graphene easily accepts these alternating B7-C6 chains and that the implanted boron components may dramatically modify the electronic properties. This suggests that our model system might serve as a blueprint for the controlled layout of graphene based nanodevices, where the semiconducting properties are supplemented by parts of the graphene matrix itself, and the basic metallic wiring is provided by alternating chains of implanted boron clusters. [1] A. Quandt, C. Özdoğan, J. Kunstmann, and H. Fehske, Nanotechnology 19, 335707 (2008). [2] A. Quandt, C. Özdoğan, J. Kunstmann, and H. Fehske, phys. stat. solidi (b) 245, 2077 (2008).