1. State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China.
2. Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, China.
3. Center for Nano-chemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
4. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China.
5. Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Institute for Multidisciplinary Innovation, University of Science and Technology Beijing, Beijing 100083, China.
6. Interdisciplinary Institute of Light-Element Quantum Materials, Research Center for Light-Element Advanced Materials, Peking University, Beijing 100871, China.
7. Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
8. Peking University Yangtze Delta Institute of Optoelectronics, Nantong, Jiangsu 226010, China.
9. Beijing Graphene Institute, Beijing 100095, China.