1. Institute of Theoretical Physics University of Regensburg 93040 Regensburg Germany
2. Department of Materials and Interfaces Weizmann Institute of Science Rehovoth 76100 Israel
3. IEK5‐Photovoltaics Forschungszentrum Jülich 52425 Jülich Germany
4. Faculty of Engineering and CENIDE University of Duisburg‐Essen 47057 Duisburg Germany
5. InnovationLab 69115 Heidelberg Germany
6. Institute for High Frequency Technology TU Braunschweig 38106 Braunschweig Germany
7. Department of Chemistry University of Pennsylvania Pennsylvania PA 19104‐6323 USA
8. Department of Chemistry Columbia University New York NY 10027 USA