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

Abstract

Multichromophoric dye-sensitized solar cells (DSCs) based on self-assembled zinc-porphyrin···peryleneimide dyads on TiO(2) 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.

Porphyrins as Active Components for Electrochemical and Photoelectrochemical Devices

“…The use of more sophisticated ligands, such as N-pyridylperyleneimide, was tested with meso 4-tert-butylphenyl substituted zinc porphyrin in order to obtain multichromophoric DSSCs ( Figure 72). 258 Complexation between the ligand and the porphyrin was studied in solution by NMR spectroscopy. TiO 2 was functionalized with the porphyrin, the peryleneimide derivative and with the complex of the two chromophores to realize solar cells.…”

Chemistry of Diruthenium and Dirhodium Analogues of Pentaborane(9): Synthesis and Characterization of Metal N,S‐Heterocyclic Carbene and B‐Agostic Complexes

“…Perylene bis(imide) is an organic chromophore with exceptional characteristics,1–3 including high quantum yield, photoluminescence, thermal and photochemical stability, as well as good optical and electronic properties,4 which lead to applications5 in fields such as fluorescent markers,6 photonics,7 organic electronics,8–10 and solar devices 5–12. Their use in the construction of multichromophoric dye arrays (cyclic or incorporating branches) embraces the promise of enhancing light‐harvesting efficiency; this goal can be achieved by instilling a supramolecular13,14 approach by using hydrogen‐bonding,15 hydrophobic,16 and π–π interactions and metal–ligand binding approaches to control the shape and size of the assembled architectures.…”

Dye-sensitized solar cells based on multichromophoric supramolecular light-harvesting materials

“…To construct DSSCs, TiO 2 -coated (5 mm thick layer of 20 nm particles, Solaronix) FTO substrates were first immersed in a PyPMI solution (0.15 mM in CH 2 Cl 2 ), which allowed the dye to anchor onto the surface through its anhydride end. 11,14 After washing away the unbound dyes, the PyPMI-functionalized surface was immersed in a ZnPc solution (2 mM in CH 2 Cl 2 ) to form ZnPcÁ Á ÁPyPMI dyads on the surface (Fig. 1).…”