1. Division of Physics and Semiconductor Science, Dongguk University, Seoul 04620, South Korea
2. Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea
3. Innovative Compound Semiconductor and Application Laboratory, Department of Electronic and Computer Engineering, Hanyang University, Seoul 04763, Republic of Korea
4. Nano Center Indonesia Research Institute, Puspiptek Street, South Tangerang, Banten 15314, Indonesia
5. Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, South Korea