Affiliation: | 1. Laboratory of Organic Electronics, Department of Science and Technology, Link?ping University, Norrk?ping, Sweden;2. Thin Film Physics Division, Department of Physics Chemistry and Biology, Link?ping University, Link?ping, Sweden;3. Technical University of Denmark, Department of Energy Conversion and Storage, Roskilde, Denmark;4. Max‐Planck‐Institut für Kohlenforschung, Mülheim an der Ruhr, Germany |