1. School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, China
2. Laboratory of Solid State Optoelectronics Information Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
3. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101804, China
4. School of Physical and Electronic Engineering, Yancheng Teachers University, Yancheng 224002, China