Aryl/hetero-arylethyne bridged dyes : The effect of planar π-bridge on the performance of dye-sensitized solar cells

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Jun-Ling Song
  • Pitchamuthu Amaladass
  • Shu-Hao Wen
  • Kalyan Kumar Pasunooti
  • An Li
  • Yao-Lun Yu
  • Wei-Qiao Deng
  • Xue-Wei Liu

Detail(s)

Original languageEnglish
Pages (from-to)127-136
Journal / PublicationNew Journal of Chemistry
Volume35
Issue number1
Publication statusPublished - Jan 2011
Externally publishedYes

Abstract

We have designed and synthesized three metal-free sensitizers consisting of dimethoxy-substituted triphenylamine as donor, cyanoacrylic acid as acceptor with planar π-bridge. The photon to current conversion efficiency of these dyes were measured as sensitizers for DSSCs analysis. The results obtained from these experiments show that the overall conversion efficiency of D3 gave the highest overall efficiency 4.98% with short circuit current density (J sc) of 11.29 mA cm-2, an open-circuit voltage (V oc) of 0.637 V and a fill factor of 69.2% under standard global AM 1.5 solar conditions. In addition, the experimental results show that π-conjugated bridge can extend the absorption of dye molecular and strong planarity (close-packing) can suppress the charge recombination at TiO 2/electrolyte interface. Hence, the donor-π bridge-acceptor architectures can generate a unidirectional current flow, to some extent, which can enhance the cell performance. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2011.

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Citation Format(s)

Aryl/hetero-arylethyne bridged dyes: The effect of planar π-bridge on the performance of dye-sensitized solar cells. / Song, Jun-Ling; Amaladass, Pitchamuthu; Wen, Shu-Hao et al.
In: New Journal of Chemistry, Vol. 35, No. 1, 01.2011, p. 127-136.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review