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Corresponding authors
a
Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Beijing, Chinese Academy of Sciences, China
E-mail:
zxwang@iphy.ac.cn
b
College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China
E-mail:
wxf@iphy.ac.cn
c
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, China
E-mail:
rcyu@iphy.ac.cn
d
Max Planck Institute for Chemical Physics of Solids, Dresden, Germany
e
Synchrotron Soleil L’Orme des Merisiers St-Aubin Gif-sur-Yvette Cedex, France
f
School of Physical Science and Information Technology, Liaocheng University, Liaocheng, China
g
Laboratory for Advanced Materials and Electron Microscopy, Institute of Physics, Beijing, Chinese Academy of Sciences, China
h
Department of Physics, City University of Hong Kong, Hong Kong 999077, China
i
National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
j
Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China