Berlin 2012 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 71: Poster Session: Graphene / Topological Insulators / Interfaces and Surfaces

HL 71.16: Poster

Mittwoch, 28. März 2012, 16:00–19:00, Poster D

Edge Functionalization of Graphene Nanoribbons — •Eric Parzinger, Max Seifert, Lucas Hess, Martin Stutzmann, and Jose Antonio Garrido — Walter schottky Institut, TU München, Germany

Due to its unconventional electronic properties, graphene is a suitable material for investigating low dimensional effects e.g. quantized conductance even at room temperature. When shrinking down the dimensions of graphene field effect transistors to the nanoscale, the sheet edges gain more and more importance and are known to have a strong influence on the device performance. It has been shown that proper functionalization of the edges and, thus, passivation of dangling bonds can greatly improve the performance of nanoscale devices. We use CVD grown graphene and electron beam lithography to produce nanoscale graphene field effect transistors, and we investigate the effect of different functionalization methods on the electronic properties of such devices.