1. Laboratory of Organic Electronics Department of Science and Technology Linköping University SE-60174 Norrköping Sweden
2. Wallenberg Wood Science Center Linköping University SE‐60174 Norrköping Sweden
3. Department of Chemistry University of Oxford Oxford OX1 3TA UK
4. KAUST Solar Center King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia