1. UMDO Instituto de Ciencia de los Materiales Universidad de Valencia Paterna 46980 Valencia Spain
2. Escuela Técnica Superior de Ingeniería Universidad de Valencia Valencia 46100 Spain
3. Applied Nanoelectronics Department of Electronics University of Barcelona Barcelona 08028 Spain
4. Department of Chemistry and Applied Biosciences ETH Zürich Zürich 8093 Switzerland
5. Laboratory for Thin Films and Photovoltaics Empa‐Swiss Federal Laboratories for Materials Science and Technology Dübendorf 8600 Switzerland
6. SKKU Institute of Energy Science and Technology (SIEST) Sungkyunkwan University Suwon 440‐746 Republic of Korea