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HL: Fachverband Halbleiterphysik

HL 50: HL Poster IV

HL 50.27: Poster

Donnerstag, 15. März 2018, 19:00–21:00, Poster B

Tight-Binding Simulation of Multilayer Graphene Quantum Dots — •Christian Wimmenauer, Stefan Fasbender, and Thomas Heinzel — Solid State Physics Laboratory (IPkM), Heinrich-Heine-Universität-Düsseldorf

Multilayer Graphene Quantum Dots (ML-GQDs) are simulated using an tight binding approach implemented with the KWANT Software Package. The emphasis lies on the investigation of the size, shape and edge structure interplay in regards to the energetic structure of these multilayer systems. Thus armchair type and zigzag type ML-GQDs, as well as mixed edge type ML-GQDs are examined for different lateral sizes and numbers of layers. The calculations suggest, that the systems will undergo a redshift with a growing number of layers, the magnitude depends on the edge type and the lateral size of the ML-GQDs. The results are supposed to help preparing superior nanoparticles for biomedical applications and to understand the impact of clustering on their optical properties.