1. State
Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
2. College
of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. School
of Science, Minzu University of China, Beijing 100081, People’s Republic of China
4. School
of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China