1. Key Laboratory of Optoelectronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3. School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China
4. Beijing Information Science and Technology University,Beijing 100016, China
5. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
6. School of Engineering, University of Chinese Academy of Sciences, Beijing 100049, China