1. Department of Chemistry, Shantou University, Guangdong 515063, China, and Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong SAR, China
2. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China
3. Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China, and Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China
4. Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China