1. imec, Kapeldreef 75, B3001 Leuven, Belgium
2. Holst Centre/TNO, Hightech Campus 31, PO box 8550, 5605 KN, Eindhoven, The Netherlands
3. Convergence Components and Materials Laboratory, Electronics and Telecommunications Research Institute (ETRI), 161 Gajeong-dong, Yuseong-gu, Daejeon 305-350, Republic of Korea
4. Heeger Center for Advanced Materials, Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro (Oryong-dong), Buk-gu, Gwangju 500-712, Republic of Korea
5. Department of Chemical Engineering, Hanbat National University,16-1 Dukmyung-dong, Yuseong-gu, Daejeon, 305-719, Republic of Korea