1. State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and EngineeringSouth China University of Technology 381 Wushan Road Guangzhou 510640 P. R. China
2. Innovation Center of Printed PhotovoltaicsSouth China Institute of Collaborative Innovation Dongguan 523808 P. R. China
3. Institute of Materials for Electronics and Energy Technology (i‐MEET)Friedrich‐Alexander‐University Erlangen‐Nuremberg Martensstraße 7 Erlangen 91058 Germany
4. Department of ChemistryThe Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong 999077 P. R. China
5. National Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou University Zhengzhou 450002 P. R. China
6. Guangdong Key Lab of Nano‐Micro Material Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate SchoolPeking University Xili University Town Shenzhen 518055 P. R. China