A study of oligothiophene-acceptor dyes in p-type dye-sensitized solar cells

Esmaeil Sheibani, Lei Zhang, Peng Liu, Bo Xu, Edgar Mijangos, Gerrit Boschloo, Anders Hagfeldt, Leif Hammarström, Lars Kloo, Haining Tian

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Abstract

Two new dyes, E1 and E2, equipped with triphenylamine as the electron donor, oligothiophene as the linker and different electron acceptor groups, have been designed and synthesized as photosensitizers for p-type dye-sensitized solar cells (p-DSCs). A systematic study of the effect of molecular structures on the observed photophysical properties, the electron/hole recombination process, the overall performance and the interfacial charge separation was carried out. Transient absorption spectroscopy (TAS) shows that the E1 dye with a napthoilene-1,2-benzimidazole (NBI) unit as the acceptor has a longer lifetime in the reduced state than the E2 dye with a malononitrile subunit on the NiO surface.

Original languageEnglish
Pages (from-to)18165-18177
Number of pages13
JournalRSC Advances
Volume6
Issue number22
DOIs
Publication statusPublished - 2016

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Sheibani, E., Zhang, L., Liu, P., Xu, B., Mijangos, E., Boschloo, G., Hagfeldt, A., Hammarström, L., Kloo, L., & Tian, H. (2016). A study of oligothiophene-acceptor dyes in p-type dye-sensitized solar cells. RSC Advances, 6(22), 18165-18177. https://doi.org/10.1039/c5ra26310g