1. Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Institute of Physics Chinese Academy of Sciences Beijing 100190 China
2. College of Material Science and Opto‐Electronic Technology University of Chinese Academy of Sciences Beijing 101408 China
3. School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China
4. Laboratory for Advanced Materials and Electron Microscopy Institute of Physics Chinese Academy of Sciences Beijing 100190 China
5. National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan
6. Synchrotron Soleil L'Orme des Merisiers St‐Aubin 91192 Gif‐sur‐Yvette Cedex France
7. School of Physical Science and Information Technology Liaocheng University Liaocheng 252059 China
8. Institute for Superconducting and Electronic Materials University of Wollongong Wollongong NSW 2500 Australia
9. Max Planck Institute for Chemical Physics of Solids Dresden 01187 Germany