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Philos Trans A Math Phys Eng Sci. 2014 Mar 10;372(2013):20130009. doi: 10.1098/rsta.2013.0009. Print 2014 Apr 13.

D-A-D structured organic molecules with diketopyrrolopyrrole acceptor unit for solution-processed organic solar cells.

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Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, , Beijing 100190, People's Republic of China.


Four solution-processable D-A-D structured organic molecules with diketopyrrolopyrrole (DPP) as acceptor unit and triphenylamine (TPA) or (4-hexyl)thieno [3,2-b]thiophene (HTT) as donor unit, DPP8-TPA, DPP8-TPA-OR, DPP6-HTT and DPP8-HTT, were designed and synthesized for the application as donor materials in solution-processed organic solar cells (OSCs). The molecules show broad absorption and relatively lower highest occupied molecular orbital energy levels. Photovoltaic properties of the molecules were investigated by fabricating the bulk-heterojunction OSCs with the molecules as donor and PC71BM as acceptor. Power conversion efficiency of the OSC based on DPP8-HTT reached 1.5% under the illumination of AM1.5, 100 mW cm(-2).


diketopyrrolopyrrole-containing molecules; organic solar cells; solution-processable organic molecules

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