1. Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 China
2. Department of Chemistry City University of Hong Kong Hong Kong SAR 999077 China
3. Department of Materials Science and Engineering City University of Hong Kong Hong Kong SAR 999077 China
4. Center of Super‐Diamond and Advanced Films (COSDAF) City University of Hong Kong Hong Kong SAR 999077 China
5. Hong Kong Institute for Clean Energy (HKICE) City University of Hong Kong Hong Kong SAR 999077 China