1. Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany
2. Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
3. Institute for Photovoltaics (IPV), University of Stuttgart, Stuttgart, Germany
4. IEK-5 Photovoltaik, Forschungszentrum Jülich, Jülich, Germany
5. Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Straße 3, 64287 Darmstadt, Germany
6. InnovationLab GmbH, Speyerer Straße 4, 69115 Heidelberg, Germany