High Incident Photon-to-Current Conversion Efficiency of p-Type Dye-Sensitized Solar Cells Based on NiO and Organic Chromophores

The synthesis and characterization of an organic dye, P4, together with its performance in p-type dye-sensitized solar cells (DSSCs) is presented. A solar-cell device based on P4 and an electrolyte that contains the I−/I3− couple in acetonitrile yielded an IPCE value of 44% on a transparent NiO film only 1–1.4 μm thick, the highest value obtained so far.