1. Institute of Functional Nano and Soft Materials (FUNSOM) Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University 199 Ren‐Ai Road Suzhou 215123 China
2. Institute of Material Science and Engineering King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
3. MIND Department of Electronic and Biomedical Engineering Universitat de Barcelona Martí i Franquès 1 Barcelona E‐08028 Spain
4. Aixtron Ltd Anderson Road, Buckingway Business Park Swavesy CB24 4FQ UK