Comparative study of Ruthenium complexes with organic sensitizer in ZnO based DSSC /

Abstract

Ruthenium dyes are a well-known player in the field of DSSCs due to their structure and presence of a novel metal. Their properties and complexes are studied for almost three decades. Although these sensitizers show better performances, their high cost makes these devices less economical. Organic dyes have recently been explored as an alternative to ruthenium-based dyes due to their easy and low-cost synthesis. This is a comparative study between Ruthenium and organic dyes which analysis dicyanoisophorone and Rhodanine organic dyes with ruthenium complexes. The Ruthenium complex named SZD-3 has shown efficiency of 1.208%. High recombination rate at interfaces of photoanode- dye molecule and photoanode- electrolyte molecule degrades the device performance consequently decreasing open-circuit voltages and short circuit current of the device. ZnO metal oxide structure instability in the presence of Ru-dyes is also a player in the lower output of the devices. While organic sensitizers SMA-06 and PT4N are 10-11% efficient as compared to SZD-3.