1. Department of Electrical Engineering, Sejong University, Seoul 05006, Korea
2. Department of Physics and Astronomy, Graphene Research Institute, Sejong University, Seoul 05006, Korea
3. Department of Physics, Division of Science and Technology, University of Education, Lahore 54000, Pakistan
4. Department of Chemical Engineering, New Uzbekistan University, Tashkent 100007, Uzbekistan
5. Department of Electrical Engineering, College of Engineering and Technology, University of Sargodha, Sargodha, Punjab 40100, Pakistan
6. State Key Laboratory of Chemistry and Utilization of Carbon-based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
7. Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China