1. Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics and Research Center for Carbon-based Electronics, Peking University, Beijing 100871, China
2. State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics, Peking University, Beijing 100871, China
3. Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Hunan 411105, China
4. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China