Affiliation: | 1. Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, China;2. Graduate School at Shenzhen of Tsinghua University, Shenzhen, China;3. Department of Physics, The Pennsylvania State University, University Park, PA, USA;4. Department of Materials Science and Engineering and Center for 2‐Dimensional and Layered Materials, The Pennsylvania State University, University Park, PA, USA;5. Department of Chemistry, The Pennsylvania State University, University Park, PA, USA;6. Institute of Carbon Science and Technology, Shinshu University, Nagano, Japan |