1. Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen Graduate School in Advanced Optical Technologies, Paul Gordan Strasse 6, Erlangen 91052, GermanybFriedrich-Alexander-Universität Erlangen-Nürnberg, Chair of Electron Devices, Cauerstrasse 6, Erla
2. Fraunhofer Institute for Integrated Systems and Device Technology, Schottkystrasse 10, Erlangen 91058, Germany