Efficient thieno[3,2-a]carbazole-based organic dyes for dye-sensitized solar cells

Hua Jiang, Kazuaki Oniwa, Ashraful Islam, Jian Zhao, Liyuan Han, Ying Ji Sun, Ming Bao, Naoki Asao, Yoshinori Yamamoto, Tienan Jin

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Abstract A new series of donor-π-acceptor organic dyes based on thieno[3,2-a]carbazole as a new donor moiety, designated as JH-dyes, has been synthesized for dye-sensitized solar cells (DSCs). The photophysical properties and DSC performances of JH-dyes have been characterized. Among the three JH-dyes, a high power conversion efficiency (η) of 8.04% with a short-circuit current (Jsc) of 14.08 mA cm-2 and an open-circuit voltage (Voc) of 0.78 V has been achieved for DSC based on JH03 bearing hexyl chains on the terthiophene π-linker. The electrochemical impedance spectra (EIS) and intensity-modulated photovoltage spectroscopy (IMVS) of JH-cells were measured to understand the effect of molecular structure on charge transfer process and electron life time.

Original languageEnglish
Article number26621
Pages (from-to)6534-6540
Number of pages7
JournalTetrahedron
Volume71
Issue number37
DOIs
Publication statusPublished - 2015 Aug 7

Keywords

  • Charge transfer
  • Donor-π-acceptor
  • Dye-sensitized solar cell
  • Molecular planarity
  • Thieno[3,2-a]carbazole

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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  • Cite this

    Jiang, H., Oniwa, K., Islam, A., Zhao, J., Han, L., Sun, Y. J., Bao, M., Asao, N., Yamamoto, Y., & Jin, T. (2015). Efficient thieno[3,2-a]carbazole-based organic dyes for dye-sensitized solar cells. Tetrahedron, 71(37), 6534-6540. [26621]. https://doi.org/10.1016/j.tet.2015.04.018