¹Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

²Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583

³Advanced Science Research Center, City University of New York, New York 10031, USA

⁴Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore, 117542

⁵Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634

⁶Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 17543

⁷Centre for Advanced 2D Materials, National University of Singapore, Block S14, 6 Science Drive 2, Singapore, 117546

⁸Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, Wuhan 430205, China