1. Department of Electrical Engineering, Sejong University, Seoul 05006, Republic of Korea
2. Department of Physics, Riphah International University, Faisalabad Campus, 44000, Pakistan
3. Department of Physics and Astronomy, Sejong University, Seoul 05006, Republic of Korea
4. Department of Semiconductor System Engineering, Sejong University, Seoul 05006, Republic of Korea
5. Department of Physics, University of Lahore, Lahore, 53700, Pakistan
6. Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
7. Department of Chemical Engineering, New Uzbekistan University, Tashkent, 100007, Uzbekistan
8. Department of Electronics and Nano Engineering, Aalto University, P.O. Box 13500, FI-00076 Aalto, Finland