Multichromophoric dye-sensitized solar cells based on supramolecular zinc-porphyrin•••perylene-imide dyads

Multichromophoric dye-sensitized solar cells (DSCs) based on self-assembled zinc-porphyrin center dot center dot center dot peryleneimide dyads on TiO2 films display more efficient light-to-electrical energy conversion than DSCs based on individual dyes. Higher efficiency of multichromophoric dyes can be attributed to co-sensitization as well as vectorial electron transfer that lead to better electron-hole separation in the device.