1. SZU-NUS
Collaborative Innovation Center for Optoelectronic Science and Technology, Shenzhen University, Shenzhen 518060, China
2. Department
of Chemistry, National University of Singapore, Singapore 117543, Singapore
3. Department
of Physics, National University of Singapore, Singapore 117542, Singapore
4. Centre
for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, 117546, Singapore
5. NUS Graduate School for Integrative Sciences and Engineering, Centre for Life Sciences #05-01, 28 Medical Drive, 117456, Singapore
6. Institute of Materials Research and Engineering (IMRE), 2 Fusionopolis Way, Singapore 138634, Singapore
7. Institute
for Advanced Study and Department of Physics, Nanchang University, 999 Xue Fu Da Dao, Nanchang 330031, China
8. Key
Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced
Materials (IAM), Jiangsu National Synergetic Innovation Center for
Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing 211816, People’s Republic of China
9. National University of Singapore (Suzhou) Research Institute, 377 Lin Quan Street, Suzhou
Industrial Park, Jiang Su 215123, China