TiO2 Nanotube-Based Dye-Sensitized Solar Cell Using New Photosensitizer with Enhanced Open-Circuit Voltage and Fill Factor

摘要

We report the synthesis and characterization of a high molar extinction coefficient ruthenium complex sensitizer (Ru (6,6'-(COOEt)2-2,2'-bpy)2(Cl)2). In conjugation with TiO2 nanotube arrays as a photoactive material and iodine/iodate redox electrolyte, we fabricated efficient dye-sensitized solar cell device showing a conversion efficiency of 3.94% measured under the air mass 1,5 global (AM1.5G) sunlight. The solar cell device showed a reasonably high open circuit voltage (0,74 V) as well as a fill factor of 0.63.