1. Photoelectronic
Hybrid Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
2. Department
of Chemistry, Korea University, Seoul 136-713, Korea
3. Department
of Chemistry, Chung-Ang University, Seoul 156-756, Korea
4. School
of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
5. Department
of Physics, Sogang University, Seoul 121-742, Korea
6. Department
of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea