1. Institut für Physik Technische Universität Chemnitz 09126 Chemnitz Germany
2. MOLTECH‐Anjou CNRS UMR 6200 University of Angers 49045 Angers France
3. Max Planck Institute for Polymer Research 55128 Mainz Germany
4. King Abdullah University of Science and Technology (KAUST) KAUST Solar Center (KSC) Physical Sciences and Engineering Division (PSE) Material Science and Engineering Program (MSE) Thuwal 23955‐6900 Kingdom of Saudi Arabia