A meso–meso directly linked porphyrin dimer-based double D–π–A sensitizer for efficient dye-sensitized solar cells

Abstract

A novel double D–π–A branched dye (JY07) was synthesized and applied as a sensitizer for DSSCs. JY07 exhibited broader and stronger light absorption capability than the single D–π–A dye (JY06). In the meantime, the orthogonal conformation of JY07 was found to be favorable for impeding intermolecular aggregation. Consequently, a power conversion efficiency of 5.33% was achieved under AM 1.5G conditions.