1. State Key Laboratory of Optoelectronic Materials and Technologies
2. Provincial Key Laboratory of Display Material and Technology
3. School of Electronics and Information Technology
4. Sun Yat-sen University
5. School of Physics and Engineering
6. Wuhan National Laboratory for Optoelectronics
7. Huazhong University of Science and Technology
8. Wuhan
9. 430074 China
10. School of Physics and Technology
11. Center for Electron Microscopy
12. Wuhan University
13. 430072 China