New Family of Ruthenium-Dye-Sensitized Solar Cells (DSSCs) with a High Solar-Energy-Conversion Efficiency

Abstract

Two ruthenium complexes (5 and 6) with bipyridinedipyridophenazine ancillary ligands have been synthesized in an attempt to increase the π-conjugated system as well as to increase the optical extinction coefficient. Structural characterization was determined by proton NMR spectra. The photophysical and electro chemical were studied by UV-Vis and cyclic voltrammetry, respectively. The DSSCs fabrications of both ruthenium dyes were studied under 1.5 AM standard irradiation (100 mWcm2) and reported in the factor of solar-light-to-electricity conversion efficiency, a short-circuit current density, an open-circuit photovoltage, and a fill factor (compared with N3 dye).