1. College of Electronic Science and Technology
2. THz Technical Research Center
3. Key Laboratory of Optoelectronics Devices and Systems of Ministry of Education and Guangdong Province
4. Shenzhen University
5. Shenzhen 518060
6. Ningbo Institute of Material Technology and Engineering
7. Chinese Academy of Sciences
8. Ningbo
9. P. R. China
10. College of Materials Science and Engineering & College of Optoelectronic Engineering
11. Low Dimensional Materials and Devices Laboratory
12. Tsinghua-Berkeley Shenzhen Institute
13. Tsinghua University Shenzhen