1. Institute for Photovoltaics (ipv), University of Stuttgart, 70569 Stuttgart, Germany
2. Helmholtz Young Investigator Group FRONTRUNNER, IEK-5 Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany
3. IEK-5 Photovoltaics, Forschungszentrum Jülich, 52425 Jülich, Germany
4. Chair of Applied Physics and Semiconductor Spectroscopy, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Zuse-Straße 1, 03046 Cottbus, Germany
5. Department of Chemistry, University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
6. Department of Electrical & Computer Engineering and Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
7. Faculty of Engineering and CENIDE, University of Duisburg-Essen, Carl-Benz-Str. 199, 47057 Duisburg, Germany