1. School of Electronic and Electrical Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea
2. Semiconductor Integrated Metrology Team, Advanced Instrumentation Institute, Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Daejeon 34113, Republic of Korea
3. Department of Electronic Engineering, Hallym University, Chuncheon 24252, Republic of Korea
4. College of Ocean Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China