Relationships between Cell Parameters of Dye-Sensitized Solar Cells and Dye-Adsorption Parameters

The performance of dye-sensitized solar cells (DSCs) is affected strongly by sensitizer-dye adsorption behavior on TiO2 nanocrystal electrode. This study reports quantitative relationships between DSC cell performance parameters and dye-adsorption parameters for the first time. We discovered a logarithmic relationship between short-circuit photocurrent density (J(sc)) and dye-adsorption equilibrium constant on TiO2 surface, and a linear relationship between open-circuit potential (V-oc) and dye-adsorption density on TiO2 surface 5 7 for DSCs. These relationships provide a convenient method for forecasting the performance of TiO2 nanoparticles for DSCs from the dye-adsorption parameters, and also indicate future directions for the development of high-performance TiO2 nanoparticles for DSCs.