4.7 Article

Benzo[1,2-b:4,5-b ']dithiophene-dioxopyrrolothiophen copolymers for high performance solar cells

Journal

CHEMICAL COMMUNICATIONS
Volume 46, Issue 27, Pages 4997-4999

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cc00098a

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Funding

  1. National Nature Science Foundation of China (NSFC) [20674049, 20834005]
  2. Shanghai municipal government [B202, 10ZZ15]

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New donor/acceptor polymers PBDTDPT1 and PBDTDPT2 with alternating benzodithiophene and N-alkylated dioxopyrrolothiophene were synthesized. The new polymers had deep HOMO levels of 5.42 and 5.44 eV for PBDTDPT1 and PBDTDPT2, respectively. A PBDTDPT2 based BHJ solar cell device achieved a PCE of 4.79% and V(oc) of 0.91 V.

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