1. School of Advanced Materials Science and Engineering; Sungkyunkwan University (SKKU); Suwon 440-746 Republic of Korea
2. SKKU Advanced Institute of Nanotechnology (SAINT); Sungkyunkwan University (SKKU); Suwon 440-746 Republic of Korea
3. Digital Media & Communications (DMC) R&D Center; Samsung Electronics; Seoul 06765 Republic of Korea