Cyclometalated ruthenium sensitizers for p-type NiO dye-sensitized solar cells

摘要

NiO p-type dye-sensitized solar cells (NiO p-DSCs) are attracting increasing research attention as they can be used as the photocathode in tandem dye-sensitized solar cells (t-DSCs) and artificial photosynthesis devices. In a t-DSC, both anode and cathode are sensitized and photoactive. Ideally, the anodic sensitizer and the cathodic sensitizer have complementary light absorption. Therefore, a t-DSC can absorb a broader range of the solar spectrum and achieve a higher photovoltage than the conventional TiO2 - or ZnO-based n-type DSCs. However the performance of the current t-DSCs is still hindered by the relatively low photocurrent generated at the p-DSC side.