1. Department of Applied Physics
2. The Hong Kong Polytechnic University
3. China
4. Beijing Institute of Space Mechanics & Electricity
5. Beijing 100094
6. State Key Laboratory of Analog and Mixed Signal VLSI
7. Institute of Microelectronics
8. University of Macau
9. Macau
10. School of Electronics and Information Engineering
11. State Key Laboratory of Optoelectronic Materials and Technologies
12. Sun Yat-sen University
13. Guangzhou 510275