1. College of Electronic and Information Engineering
2. Shandong University of Science and Technology
3. Qingdao 266590
4. China
5. Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics
6. College of Optoelectronic Engineering
7. Shen Zhen University
8. Shen Zhen 518060
9. School of Electronic Science and Engineering
10. Nanjing University
11. Nanjing 210093