A linear solution-processable small molecule (BDT-2DPP) based on 5-alkylthiophene-2-yl-substituted benzodithiophene and diketopyrrolopyrrole is designed and synthesized. BDT-2DPP exhibits strong and broad absorption with low band gap, low lying energy levels matching with PC61BM and high hole mobility. Solution-processed organic solar cells based on BDT-2DPP:PC61BM blend showed power conversion efficiencies as high as 5.79%.
No takes yet. Share an insight, caveat, or question.
Lin et al. (2013) studied this question.