1. Faculty of Physics University of Vienna 1090 Vienna Austria
2. CICECO ‐ Aveiro Institute of Materials Department of Physics University of Aveiro 3810‐193 Aveiro Portugal
3. School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
4. State Key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research Center Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices School of Materials Science and Engineering Sun Yat‐sen University Guangzhou 510275 China
5. School of Engineering Huzhou University Huzhou Zhejiang 313000 P. R. China
6. Central Facility for Electron Microscopy Electron Microscopy Group of Materials Science Ulm University 89081 Ulm Germany
7. Department of Physics Tokyo Metropolitan University Tokyo 192‐039 Japan
8. CICECO ‐ Aveiro Institute of Materials Department of Chemistry University of Aveiro 3810‐193 Aveiro Portugal