1. Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
2. Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
3. School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, People’s Republic of China
4. Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
5. Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
6. Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
7. Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109, United States
8. Two-Dimensional Crystal Consortium, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
9. Center for Two-Dimensional and Layered Materials, The Pennsylvania State University, University Park, Pennsylvania 16802, United States