1. Semiconductor R&D Center, Samsung Electronics, Hwaseong 18488, Republic of Korea
2. Department
of Semiconductor and Display Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
3. School
of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
4. Samsung Advanced Institute of Technology, Suwon 16678, Republic of Korea