Spectroscopic Analysis of NIR-Dye Sensitization in Bulk Heterojunction Polymer Solar Cells

摘要

The photovoltaic conversion efficiency for near-infrared (NIR) sunlight is improved successfully by dye sensitization of bulk hcterojunction polymer solar cells, in which the active layer was prepared by a ternary blend of poly(3-hcxylthiophene), a fullerene derivative (1-(3-methoxycar-bonyl)propy1-l-phenyl-[6,6[-methanofullerene), and an NTR dye, silicon phthalocyanine bis(lrihcxylsilyl oxide). The mechanism of the NIR-dye sensitization is studied by femtosecond transient absorption spectroscopy.