1. Key Laboratory of Optoelectronic Technology and Systems (Chongqing University), Ministry of Education, School of Optoelectronic Engineering, Chongqing University, 174 Shazheng Street, Shapingba, Chongqing 400044, China
2. School of Information Engineering, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, Sichuan 621010, China
3. Nanofabrication Laboratory, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
4. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
5. Key Laboratory of Biomedical Effects of Nanomaterials and Nanosafety, Chinese Academy of Sciences and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China