화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.578, No.1, 55-62, 2013
Study on Low-Band Gap Polymers Based on Diketopyrrolopyrrole for Organic Photovoltaic Applications
Two kinds of low-band gap polymers, poly[{N-(1-octyldecyl)-2,7-carbazole)}-alt-{3,6-bis(phenylene-1,4-diyl)-2,5-di(1-octyldecyl)-2,5-dihydropyrrolo[3,4]pyrrole-1,4-dione}], poly(Cvz-PhDPP) and poly[{N-(1-octyldecyl)-2,7-carbazole)}-alt-{3,6-bis(pyridinyl-5-yl)-2,5-di(1-octyldecyl)-2,5-dihydropyrrolo[3,4]pyrrole-1,4-dione}], poly(Cvz-PyDPP), were synthesized by palladium-catalyzed Suzuki polymerization. Bulk heterojunction solar cells with an ITO/PEDOT/polymer:PC71BM/LiF/Al configuration were fabricated, which shows open-circuit voltage, short-circuit current density, fill factor, and power conversion efficiency of 0.76V, 4.01mA/cm(2), 0.35, and 1.07% under AM 1.5 irradiation (100 mW/cm(2)), respectively.