1. ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
2. Advanced Microelectronic Center Aachen (AMICA), AMO GmbH, 52074 Aachen, Germany
3. Chair of Electronic Devices, RWTH Aachen University, 52074 Aachen, Germany
4. Chair of Smart Sensor Systems, University of Wuppertal, 42119 Wuppertal, Germany
5. ICREA – Institució Catalana de Recerça i Estudis Avancats, 08010 Barcelona, Spain