Fused pyrrolo[3,2-d:4,5-d′]bisthiazole-containing polymers for using in high-performance organic bulk heterojunction solar cells

Ruidong Xia, Mohammed Al-Hashimi, Wing C. Tsoi, Martin Heeney, Donal D.C. Bradley, Jenny Nelson

Research output: Contribution to journalArticle

13 Citations (Scopus)


We report a series of fused pyrrolo[3,2-d:4,5-d′]bisthiazole (PBTz)-containing polymers as OPV donor materials, which exhibit a combination of small optical band gap, good solubility and relatively high molecular weight. The performance of the organic photovoltaic cells (OPV) made using the PBTz-containing polymers is studied. The highest performance was obtained with the polymer exhibiting the strongest crystallinity in the blend film, a PBTz-fused bithiophene polymer. Blend devices made from this polymer with PC70BM delivered a short-circuit current density of up to 9.4 mA cm-2, an open-circuit voltage of 0.61 V, a fill factor of 53% and a power conversion efficiency of 3%.

Original languageEnglish
Pages (from-to)112-116
Number of pages5
JournalSolar Energy Materials and Solar Cells
Issue number1
Publication statusPublished - 1 Jan 2012



  • Absorbance spectra
  • Crystallization
  • External quantum efficiency
  • Low band gap
  • Organic solar cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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