Effect of cation size on the performance of dye sensitized nanocrystalline TiO2 solar cells based on quasi-solid state PAN electrolytes containing quaternary ammonium iodides

- Effect of quaternary ammonium iodide salts on DSSC performance has been studied.
- Total ionic conductivity decreases with increasing cation size from NH4I to Hex4NI.
- Iodide ion conductivity in the electrolytes and Voc of DSSCs increase with cation radius from NH4I to Hex4NI.
- DSSC containing Prop4NI based electrolyte exhibits the maximum efficiency of 4.30% with maximum Jsc of 10.78 mA cm−2.
- Results have been interpreted on the basis of “electrolyte effects” and “electrode effects”.