1. Chair of Electronic Devices, RWTH Aachen University, Otto-Blumenthal-Str. 2, 52074 Aachen, Germany
2. AMO GmbH, Advanced Microelectronic Center Aachen, Otto-Blumenthal-Str. 25, 52074 Aachen, Germany
3. Institute of Physics, Faculty of Electrical Engineering and Information Technology (EIT 2) and Center for Integrated Sensor Systems, University of the Bundeswehr Munich, 85577 Neubiberg, Germany
4. Institute of Physics IA, RWTH Aachen University, Otto-Blumenthal-Straße, 52074 Aachen, Germany
5. Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
6. Black Semiconductor GmbH, Schloss-Rahe-Straße 15, 52072 Aachen, Germany