Abstract

We have carried out synthesis, characterization, and theoretical modeling of a rigid, rod‐like homometallic dinuclear ruthenium complex and an analogous mononuclear ruthenium complex using terpyridine and bipyridine ligands. The photophysical and photovoltaic properties have been investigated. We compared the results to understand the charge transfer processes in these complexes. The dinuclear complex showed overall photoelectric conversion efficiency of 1.9% in dye‐sensitized nanocrystalline TiO2 based photovoltaic cells under simulated AM1.5 solar irradiation and is found to be an efficient photosensitizer compared to the mononuclear complex. #Dedicated to the memory of Professor Sukant K. Tripathy.

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