1. Institute of Physics and AstronomyUniversity of Potsdam Karl‐Liebknecht‐Str. 24–25 Potsdam‐Golm D‐14476 Germany
2. Young Investigator Group Perovskite Tandem Solar CellsHelmholtz‐Zentrum Berlin für Materialien und Energie GmbH Kekuléstraße 5 Berlin 12489 Germany
3. Cavendish LaboratoryDepartment of PhysicsUniversity of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK
4. Institute for Materials DiscoveryUniversity College London Torrington Place London WC1E 7JE UK
5. Faculty IV – Electrical Engineering and Computer ScienceTechnical University Berlin Berlin 10587 Germany
6. Institut für Energie‐ und KlimaforschungForschungszentrum Jülich GmbH Jülich 52425 Germany
7. Faculty of Engineering and CENIDEUniversity of Duisburg‐Essen Carl‐Benz‐Str. 199 Duisburg 47057 Germany