1. Department of Chemistry Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR P. R. China
2. HKUST‐Shenzhen Research Institute No. 9 Yuexing 1st Road, Hi‐tech Park, Nanshan Shenzhen 518057 P. R. China
3. Department of Physics Chinese University of Hong Kong New Territories Hong Kong 999077 P. R. China
4. Department of Physics Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong SAR P. R. China
5. Department of Materials Science and Engineering and The Shenzhen Key Laboratory for Printed Organic Electronics Southern University of Science and Technology (SUSTech) Xueyuan Road Shenzhen Guangdong 518055 P. R. China
6. Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology (SCUT) Guangzhou 510640 P. R. China