1. School of Physics and Technology
2. MOE Key Laboratory of Artificial Micro- and Nano-structures
3. Wuhan University
4. Wuhan 430072
5. China
6. Institute of Microscale Optoelectronics
7. College of Electronic Science and Technology
8. Shenzhen Key Laboratory of Flexible Memory Materials and Devices
9. Shenzhen University
10. Shenzhen 518060
11. Center for Electron Microscopy
12. State Key Laboratory of Silicate Materials for Architectures
13. School of Materials Science and Engineering
14. Wuhan University of Technology
15. Wuhan