Abstract
In this paper, we study the impacts of solvent effects on the dye-sensitized solar cells’ (DSSCs’) performances. Initially, a new D-D-π-A phenothiazine-based metal-free organic dye (WY5) was designed and synthesized. Afterwards, we assumed that the WY5 sensitized in different solvents N, N-dimethylformamide (DMF), methanol (MeOH) and tetrahydrofuran (THF) would affect the aggregations and the adsorption modes on TiO2 surface and futher affect the photovoltaic performances of corresponding DSSCs. The champion efficiency of 5.61% was obtained by the DSSC using MeOH as sensitization solvent. Our work provides a potential strategy for investigating the impacts of diffierent sensitized solvents on the DSSCs’ performances and further to screen the best suitable sensitized solvent for dye WY5.
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