1. Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
2. Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
3. Materials Characterization Laboratory, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
4. 2D Crystal Consortium, Materials Research Institute, Pennsylvania State University, University Park, Pennsylvania 16802, United States
5. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive, Singapore 117456, Singapore
6. Centre for Advanced 2D Materials, National University of Singapore, 6 Science Drive 2, Singapore 117456, Singapore
7. Department of Physics, National University of Singapore, Singapore 117456, Singapore
8. NUS Graduate School Integrative Sciences and Engineering Programme, National University of Singapore, Singapore 117456, Singapore
9. Center for 2D and Layered Materials, Pennsylvania State University, University Park, Pennsylvania 16802, United States
10. Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States