1. Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, China
2. Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-Based Electronics, School of Electronics, Peking University, Beijing 100871, China
3. Jihua Laboratory, Foshan 528200, China
4. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China