1. Department of Chemistry, National University of Singapore, 3 Science Drive, Singapore 117543, Singapore
2. Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore
3. School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
4. Australian Synchrotron Clayton, Victoria 3168, Australia
5. Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4001, Australia
6. I10, Diamond Light Source Ltd, Diamond House, Harwell Science & Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK
7. NTU-Northwestern Institute for Nanomedicine, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
8. Hybrid Materials for Opto-Electronics Group, Department of Molecules and Materials, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands