1. Department of Graphic Arts Information
Engineering, Pukyong National University, Sinseon-ro 365, Nam-gu, Busan 608-739, Republic of Korea
2. Organic Materials Lab, Samsung Advanced Institute of
Technology, Samsung Electronics Company, Samsung-ro, Suwon, Gyeonggi 443-370, Republic of Korea
3. Department of Chemical Engineering, Stanford University, Stanford, California 94305-5025, United States
4. Department
of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daehak-ro 291, Yuseong-gu, Daejeon 305-338, Republic of Korea
5. Department of Polymer Science Engineering, Inha University, Inha-ro 100, Nam-gu, Incheon 402-751, Republic of Korea