1. Center of Super‐Diamond and Advanced Films (COSDAF) City University of Hong Kong Hong Kong P. R. China
2. Department of Chemistry City University of Hong Kong Hong Kong P. R. China
3. Department of Material Science and Engineering City University of Hong Kong Hong Kong P. R. China
4. Department of Chemistry Imperial College London London W12 0BZ United Kingdom
5. Department of Electronic and Information Engineering Research Institute for Smart Energy (RISE) The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P. R. China