1. Photovoltaics
and Optoelectronic Devices Group, Departament de Fisica, Universitat Jaume I, 12071 Castello, Spain
2. Center
for Next Generation Dye-sensitized Solar Cells, Department of Energy
Engineering, Hanyang University, Seoul 133-791, South Korea
3. Department
of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia