Increased photocurrent in a tandem dye-sensitized solar cell by modifications in push-pull dye-design.

Donor-π-acceptor photosensitizers for NiO photocathodes that exhibit a broad spectral response across the visible region are presented. These enabled an increase in the photocurrent density of p-type dye-sensitized solar cells to 8.2 mA cm(-2) and a tandem cell to be assembled which generated a photocurrent density of 5.15 mA cm(-2).