1. Department of Materials Science and Engineering; and Center for Functional Photonics (CFP); City University of Hong Kong; 83 Tat Chee Avenue Kowloon Hong Kong S.A.R.
2. Center of Nanomaterials for Renewable Energy (CNRE); State Key Lab of Electrical Insulation and Power Equipment; School of Electrical Engineering; Xi'an Jiaotong University; Xi'an 710049 China
3. Battery and Energy Storage Technologies Laboratory; School of Energy and Environment; and Center of Super-Diamond and Advanced Films (COSDAF); City University of Hong Kong; 83 Tat Chee Avenue Kowloon Hong Kong S.A.R.