1. Department of Chemistry and Center of Super‐Diamond & Advanced Films (COSDAF) City University of Hong Kong Kowloon Hong Kong 999077 P. R. China
2. City University of Hong Kong Shenzhen Research Institute Shenzhen 518057 P. R. China
3. Department of Applied Physics The Hong Kong Polytechnic University Kowloon Hong Kong 999077 P. R. China
4. The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057 P. R. China
5. Suzhou Purevision Medical Technology Co. LTD. Suzhou 215000 P. R. China
6. Physics department and Jiangsu Key Laboratory for Chemistry of Low‐Dimensional Materials Huaiyin Normal University Huaian 223300 P. R. China