1. Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei 106, Taiwan
2. National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
3. Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
4. School of Engineering Building VII, Kwansei Gakuin University, Sanda 662-8501, Japan
5. Department of Electrical and Electronic Systems Engineering, Osaka Institute of Technology, Omiya, Asahi-ku, Osaka 535-8585, Japan
6. Division of Electrical, Electronic and Infocommunications Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
7. Graduate School of Engineering, Tohoku University, Sendai 980-8577, Japan
8. Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan