1. Department
of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
2. Advanced
Functional Thin Films Department, Korea Institute of Materials Science (KIMS), 797 Changwondaero, Seongsangu, Changwon 641-831, Republic of Korea
3. Department
of Physics, Dankook University, Mt. 29, Anseo-Dong, Chonan 330-714, Republic of Korea
4. Department
of Flexible and Printable Electronics, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
5. School
of Materials Science and Engineering, Pusan National University, 63beon-gil 2, Busandaehak-ro, Geumjeong-gu, Busan 609-735, Republic of Korea
6. Measurement & Analysis Team, National Nanofab Center, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
7. Department
of Chemistry, Pukyong National University, 45, Yongso-ro,
Namgu, Busan 609-735, Republic of Korea