1. Photovoltaics
and Optoelectronic Devices Group, Departament de Fı́sica, Universitat Jaume I, 12071 Castelló, Spain
2. School
of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea
3. Center for Next
Generation Dye-Sensitized Solar Cells, Department of Energy
Engineering, Hanyang University, Seoul 133-791, South Korea
4. Department
of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia