Affiliation: | 1. Center of Super‐Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China;2. City University of Hong Kong Shenzhen Research Institute, Shenzhen, P. R. China;3. Center of Super‐Diamond and Advanced Films (COSDAF), Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong SAR, P. R. China;4. Department of Physics and Material Sciences, City University of Hong Kong, Hong Kong SAR, P. R. China |