1. State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications 9 Wenyuan Road Nanjing 210023 China
2. Center for Supramolecular Optoelectronic (CSO) Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 China
3. Department of Physics and Centre for Plastic Electronics The Blackett Laboratory Imperial College London Prince Consort Road London SW7 2AZ UK
4. Departments of Engineering Science and Physics Division of Mathematical, Physical and Life Sciences University of Oxford 9 Parks Road Oxford OX1 3PD UK
5. Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Saudi Arabia