1. College of Materials Science and Engineering Shenzhen University Shenzhen China
2. College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen China
3. Department of Materials Science and Engineering City University of Hong Kong Hong Kong China
4. Center of Super‐Diamond and Advanced Films (COSDAF) City University of Hong Kong Hong Kong China
5. National Center for Nanoscience and Technology Beijing China