1. School of Applied Physics and Materials Wuyi University Jiangmen 529020 P. R. China
2. Department of Applied Biology and Chemical Technology Research Institute for Smart Energy and CAS‐Croucher Funding Scheme for Joint Laboratories The Hong Kong Polytechnic University (PolyU) Hung Hom Hong Kong P. R. China
3. Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China
4. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 5106640 P. R. China
5. State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
6. PolyU Shenzhen Research Institute Shenzhen 518057 P. R. China