Low Band Gap Polymers for Roll-to-Roll Coated Polymer Solar Cells

摘要: We present the synthesis of a low band gap copolymer based on dithienothiophene and dialkoxybenzothiadiazole (poly(dithienothiophene-co-dialkoxybenzothiadiazole), PDTTDABT). The optical properties polymer showed 1.6 eV sky-blue color in solid films. was explored roll-to-roll coating experiments optimized with respect to manufacturing process mixing ratio [60]PCBM through series variation composition steps 1% w/w respectively PDTTDABT relatively broad optimimum found around 1:2 ratio. Roll-to-roll coated solar cell devices were prepared under ambient conditions employing solution processing all including metallic back electrode that printed as grid giving semitransparent devices. Solar modules comprising 16 serially connected cells total module active area 96 cm2. tested for operational stabil...