1. Department of Chemistry and Centre for Plastic Electronics Imperial College London London SW7 2AZ UK
2. Physical Sciences and Engineering Division (PSE) KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
3. Core Labs King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
4. Department of Materials Science and Engineering Stanford University 476 Lomita Mall Stanford CA 94305 USA
5. Department of Physics and Centre for Plastic Electronics Imperial College London London SW7 2AZ UK
6. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China
7. Institute of Materials for Electronics and Energy Technology (I‐MEET) Friedrich‐Alexander‐University Erlangen‐Nuremberg Martensstraße 7 91058 Erlangen Germany
8. Centre for Organic Electronic Materials Department of Chemistry NTNU N‐7491 Trondheim Norway
9. Bavarian Center for Applied Energy Research (ZAE Bayern) Haberstrasse 2a 91058 Erlangen Germany