The I-V Characteristics of a New Ru(II) Complex for Different Devices

Abstract

Dye Sensitized Solar Cells (DSSCs) have become very popular for the last decades because of their superior electrical properties, low-cost, conductivity, high molecular weight, and the possibility to modify the structure with different chromophore groups. Ru complexes containing bi- and tri- dentate benzimidazole type ligands are very important in DSSC technology. In this study, L1 ligand was synthesized by derivation of 2,2'-(pyridine-2,6-diyl)bis(5,6-dimethyl-1H-benzimidazole) ligand and Ru-L1 complex was prepared by using isonicotinic acid and isothiocynate as ancillary ligands. The synthesized Ru(II) complex was characterized by NMR, FT-IR, UV-Vis spectroscopic techniques, HOMO-LUMO energy  levels were determined and compared with the theoretical calculations. DSSC efficiency of the Ru(II) complex was investigated under various light intensities and the I/V characteristic of the diode that produced with Ru(II) complex was examined.