Wurstbauer, Ulrich and Röling, Christian and Wurstbauer, Ursula and Wegscheider, Werner and Vaupel, Matthias and Thiesen, Peter H. and Weiss, Dieter
Imaging ellipsometry of graphene.
Applied Physics Letters 97, p. 231901.
Other URL: http://link.aip.org/link/APPLAB/v97/i23/p231901/s1
Imaging ellipsometry studies of graphene on SiO2/Si and crystalline GaAs are presented. We demonstrate that imaging ellipsometry is a powerful tool to detect and characterize graphene on any flat substrate. Variable angle spectroscopic ellipsometry is used to explore the dispersion of the optical constants of graphene in the visible range with high lateral resolution. In this way, the influence of the substrate on graphene’s optical properties can be investigated.