An air-stable DPP-thieno-TTF copolymer for single-material solar cell devices and field effect transistors

Research output: Contribution to journalArticle

Following an approach developed in our group to incorporate tetrathiafulvalene (TTF) units into conjugated polymeric systems, we have studied a low band gap polymer incorporating TTF as a donor component. This polymer is based on a fused thieno-TTF unit that enables the direct incorporation of the TTF unit into the polymer, and a second comonomer based on the diketopyrrolopyrrole (DPP) molecule. These units represent a donor-acceptor copolymer system, p(DPP-TTF), showing strong absorption in the UV-visible region of the spectrum. An optimized p(DPP-TTF) polymer organic field effect transistor and a single material organic solar cell device showed excellent performance with a hole mobility of up to 5.3 x 10-2 cm2/(V s) and a power conversion efficiency (PCE) of 0.3%, respectively. Bulk heterojunction organic photovoltaic devices of p(DPP-TTF) blended with phenyl-C71-butyric acid methyl ester (PC71BM) exhibited a PCE of 1.8%.
Original languageEnglish
Pages (from-to)27999-28005
Number of pages7
JournalACS Applied Materials and Interfaces
Volume7
Issue number51
Early online date2 Apr 2015
DOIs
StatePublished - 30 Dec 2015

    Research areas

  • tetrathiafulvalene (TTF), polymeric systems, low band-gap polymers, iketopyrrolopyrrole (DPP) molecule, organic solar cells, OPV, DPP-TTF polymer , OFETs, single material OPV, hole mobility

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