Dye-sensitized solar cells based on D–π–A fluorescent dyes with two pyridyl groups as an electron-withdrawing–injecting anchoring group

Abstract

D-π-A fluorescent dye with two pyridyl groups as an electron-withdrawing-injecting anchoring group possessing a high coordinate bonding ability to Lewis acid sites on the TiO2 surface, which can lead to high dye loading on the TiO2 film and efficient electron injection, has been developed as a new type of D-π-A dye sensitizer for dye-sensitized solar cells.