Dye-Sensitized Nanocrystalline ZnO Solar Cells Based on Ruthenium(II) Phendione Complex Photosensitizers: New DSSCs

In the present study, first the metal complexes [Ru II (phen)2(phendione)](PF6)2 .2H2O, [Ru II (phen)(bpy)(phendione)](PF6)2.2H2O and [Ru II (bpy)2(phendione)](PF6)2.2H2O, (phen = 1,10-phenanthroline, bpy = 2,2/ bipyridine and phendione = 1,10-phenanthroline-5,6-dione) have been synthesized as photo sensitizers for ZnO semiconductor in solar cells. FT-IR and absorption spectra showed the favorable interfacial binding between the dyemolecules and ZnO, surface. The surface analysis and size of adsorbed dye on nanostructure ZnO were further examined with AFM. The AFM images clearly show both, the outgrowth of the complexes which are absorbed on ZnO thin film and the depression of ZnO thin film. We have studied photovoltaic properties of dye-sensitized nanocrystalline semiconductor solar cells based on Ru phendion complexes and an iodine redox electrolyte. A solar energy to electricity conversion efficiency () of 1.54% was obtained under the standard AM 1.5 irradiation (100mWcm-2) with a short-circuit photocurrent density (Jsc) of 3.42 mA cm-2, an open-circuit photovoltage (Voc) of 0.622 V, and a fill factor (ff) of 0.72. Monochromatic incident photon to current conversion efficiency was 38% at 485 nm.

کلیدواژه ها:

Phendione Complexes ، ZnO Nanostructure ، . DSSCs