Dye‐Sensitized Solar Cells Based On Donor–Acceptor π‐Conjugated Fluorescent Dyes with a Pyridine Ring as an Electron‐Withdrawing Anchoring Group

Firmly attached: The short-circuit photocurrent density and conversion yields of solar cells based on pyridine-containing donor–acceptor π-conjugated (D-π-A) dyes (see scheme) are greater than those for conventional D-π-A dye sensitizers that bear a carboxy group as the electron-withdrawing anchoring group. The dyes are attached to the surface by coordinate bonding with the Lewis acid sites of TiO2.