1. School of Physics, Nanjing University of Science and Technology, Nanjing 210094, China
2. MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
3. Engineering Research Center of Semiconductor Device Optoelectronic Hybrid Integration in Jiangsu Province, Nanjing 210094, China
4. School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China