1. Institute of Microstructure TechnologyKarlsruhe Institute of Technology Hermann‐von Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany
2. Light Technology InstituteKarlsruhe Institute of Technology Engesserstrasse 13 76131 Karlsruhe Germany
3. Zentrum für Sonnenenergie‐ und Wasserstoff‐Forschung Baden‐Württemberg (ZSW) Meitnerstr. 1 70563 Stuttgart Germany
4. Institute for Solar Energy Research Hamelin (ISFH) Am Ohrberg 1 31860 Emmerthal Germany
5. Institute of Electronic Materials and DevicesLeibniz Universität Hannover Schneiderberg 32 30167 Hannover Germany