1. Department of Electronic Engineering and Materials Science and Technology Research Center The Chinese University of Hong Kong Shatin New Territories Hong Kong SAR 999077 China
2. South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China
3. School of Optoelectronic Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University Suzhou 215006 China
4. Department of Applied Physics The Hong Kong Polytechnic University Kowloon Hong Kong SAR 999077 China
5. Department of Materials Science and Engineering and Centre of Super‐Diamond and Advanced Films City University of Hong Kong Kowloon Hong Kong SAR 999077 China