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HL: Fachverband Halbleiterphysik

HL 63: Poster: Quantum Dots and Optics

HL 63.42: Poster

Mittwoch, 22. März 2017, 15:00–19:00, P1A

Effect of Gold/Silicon implantation for catalyst assisted growth of III/V-Core-Shell-Nanowires — •Marcel Schmidt, Rüdiger Schott, Sven Scholz, Arne Ludwig, and Andreas D. Wieck — Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum

Semiconductor nanowires (NWs) have a huge potential in the aim of further miniaturization of nanoscale devices due to there large surface to volume ratio as well as there strong light and carrier confinement. A prerequisite for the fabrication of nanowire devices is their doping. With the tempting prospect to achieve doping of the NWs by just using Si-doped Au metal seeds as NW catalysts, we investigate catalyst assisted molecular beam epitaxy (MBE) grown GaAs-AlGaAs-core-shell NWs. A focused ion beam system equipped with an ExB filter and a liquid metal alloy ion source (LMAIS) is used to implant the metals seeds. We will present our results on structure, morphology and optical properties, comparing Au and AuSi catalysed GaAs-AlGaAs-core-shell NWs.