1. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors Chinese Academy of Sciences Beijing China
2. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
3. College of Electronic Information and Optical Engineering Nankai University Tianjin China
4. State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University Tianjin China
5. Institute of Semiconductors South China Normal University Guangzhou China
6. Guangdong Provincial Key Laboratory of Chip and Integration Technology Guangzhou China