1. Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing, China
2. Jiangsu Institute of Advanced Semiconductors, Shenyang National Laboratory for Material Science, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
3. Jiangsu Institute of Advanced Semiconductors, Suzhou, Jiangsu, China
4. College of Electronic and Optical Engineering and the College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, China