A novel donor-acceptor conjugated copolymer, consisting  of a 3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl donor and a [2,6'-4,8-di(5-ethylhexylthienyl)benzo[1,2-b;3,3-b]dithiophene acceptor has been designed and synthesized. Introduction of alkylthiophene conjugated with thienly unit lowers bandgap, fascinates the?-? stacking, and improves the charge carrier mobility of the resulting polymer. Consequently, the resulting polymer exhibited considerably better photovoltaic performance with a power conversion efficiency of 10.12 % from single-junction polymer solar cells.

Novel donor-acceptor conjugated polymer for single-junction polymer solar cell with 10% power conversion efficiency

247th National Meeting (2014)

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