1. Institute of Physics and Astronomy University of Potsdam Karl‐Liebknecht‐Str. 24–25 14476 Potsdam‐Golm Germany
2. Clarendon Laboratory University of Oxford Parks Road Oxford OX1 3PU UK
3. Institute of Electronic Devices and Wuppertal Center for Smart Materials & Systems University of Wuppertal Rainer‐Gruenter‐Str. 21 42119 Wuppertal Germany
4. Young Investigator Group Perovskite Tandem Solar Cells Helmholtz‐Zentrum Berlin für Materialien und Energie GmbH Kekuléstraße 5 12489 Berlin Germany
5. Technical University Berlin Faculty IV – Electrical Engineering and Computer Science Marchstr. 23 10587 Berlin Germany