1. RWTH Aachen University Sommerfeldstraße 14 52074 Aachen Germany
2. Dynamics of Condensed Matter and Center for Sustainable Systems Design Chair of Theoretical Chemistry University of Paderborn 33098 Paderborn Germany
3. Department of Engineering and Architecture University of Parma Parco Area delle Scienze 181A Parma 43124 Italy
4. Zentrum für Sonnenenergie‐ und Wasserstoff‐Forschung Baden‐Württemberg Meitnerstrasse 1 70563 Stuttgart Germany