1. Photoelectric and Energy Device Application Lab (PEDAL), Multidisciplinary Core Institute for Future Energies (MCIFE), South Korea
2. Department of Electrical Engineering, Incheon National University, 119 Academy Rd. Yeonsu, Incheon, 22012, South Korea
3. Applied Materials Korea, Ltd, Icheon 17379, South Korea
4. Department of Physics, Ewha Womans University, Seoul, 03760, South Korea