1. International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
2. Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 P. R. China
3. Key Laboratory of Material Physics of Ministry of Education School of Physics and Microelectronics Zhengzhou University Zhengzhou 450052 P. R. China
4. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Normal University Guangzhou 510006 P. R. China