1. National Engineering Research Centre of Electromagnetic Radiation Control Materials
2. State Key Laboratory of Electronic Thin Films and Integrated Devices
3. School of Microelectronics and Solid State Electronics
4. University of Electronic Science and Technology of China
5. Chengdu 610054
6. Department of Chemistry
7. Centre for Advanced 2D Materials and Graphene Research Centre
8. National University of Singapore
9. Singapore 117543