1. State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and Devices School of Materials Science and Engineering South China University of Technology 381 Wushan Road Guangzhou 510640 P. R. China
2. Department of Chemistry City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong
3. Innovation Center for Printed Photovoltaics South China Institute of Collaborative Innovation Dongguan 523808 P. R. China
4. Institute of Materials for Electronics and Energy Technology (i‐MEET) Friedrich‐Alexander University Erlangen‐Nürnberg Martensstraße 7 Erlangen 91058 Germany
5. Helmholtz‐Institute Erlangen‐Nürnberg (HI ERN) Forschungszentrum Jülich Immerwahrstrasse 2 Erlangen 91058 Germany
6. National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University Zhengzhou 450002 China