1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2. Advanced Semiconductor Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
3. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, Zhejiang, China
4. University of Science and Technology of China, Hefei 230026, Anhui, China