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Promising alkoxy-wrapped porphyrins with novel push-pull moieties for dye-sensitized solar cells

Journal Article


Abstract


  • Dye-sensitized solar cells (DSSCs) have been considered as very promising third generation solar cells. Porphyrins are promising candidates as highly efficient sensitizers for DSSCs because of their superior light-harvesting ability in the visible region and their mimicking of photosynthesis. This paper focuses on the structure modification of porphyrin dyes for efficient DSSCs, which was based on a rational design using density functional theory (DFT) before the experiment. We synthesized and fully characterized four porphyrin dyes, named ZLD13, ZLD14, ZLD15 and ZLD16. On one hand, we used 5-ethynylthiophene-2-carboxylic acid to replace 4-ethynylbenzoic acid as the electron-withdrawing anchoring group for the first time. Property studies indicate that the aggregation of porphyrin molecules can be sufficiently suppressed via this modification. On the other hand, 4,4′-di(2-thienyl) triphenylamine moiety, which has been proved to be a electron donor group for triarylamine dyes in our previous reports, was introduced to porphyrin dyes, and energy conversion efficiencies (η) were improved by 76% (ZLD15 vs. ZLD13). After the two modifications, the energy conversion efficiency (η) of ZLD16 is comparable with an N719-based reference cell under the same conditions. Enhancement of photovoltaic performances from ZLD13 to ZLD16 is partly due to the decreased dark current and charge recombination rate. © the Partner Organisations 2014.

Authors


  •   Zhang, Ming-Dao (external author)
  •   Zhang, Zi-Yang (external author)
  •   Bao, Zhong-Qiu (external author)
  •   Ju, Ze-Min (external author)
  •   Wang, Xingyong
  •   Zheng, He-Gen (external author)
  •   Ma, Jing (external author)
  •   Zhou, Xing-Fu (external author)

Publication Date


  • 2014

Geographic Focus


Citation


  • Zhang, M., Zhang, Z., Bao, Z., Ju, Z., Wang, X., Zheng, H., Ma, J. & Zhou, X. (2014). Promising alkoxy-wrapped porphyrins with novel push-pull moieties for dye-sensitized solar cells. Journal of Materials Chemistry A, 2 (36), 14883-14889.

Scopus Eid


  • 2-s2.0-84906225900

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3920

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 14883

End Page


  • 14889

Volume


  • 2

Issue


  • 36

Place Of Publication


  • United Kingdom

Abstract


  • Dye-sensitized solar cells (DSSCs) have been considered as very promising third generation solar cells. Porphyrins are promising candidates as highly efficient sensitizers for DSSCs because of their superior light-harvesting ability in the visible region and their mimicking of photosynthesis. This paper focuses on the structure modification of porphyrin dyes for efficient DSSCs, which was based on a rational design using density functional theory (DFT) before the experiment. We synthesized and fully characterized four porphyrin dyes, named ZLD13, ZLD14, ZLD15 and ZLD16. On one hand, we used 5-ethynylthiophene-2-carboxylic acid to replace 4-ethynylbenzoic acid as the electron-withdrawing anchoring group for the first time. Property studies indicate that the aggregation of porphyrin molecules can be sufficiently suppressed via this modification. On the other hand, 4,4′-di(2-thienyl) triphenylamine moiety, which has been proved to be a electron donor group for triarylamine dyes in our previous reports, was introduced to porphyrin dyes, and energy conversion efficiencies (η) were improved by 76% (ZLD15 vs. ZLD13). After the two modifications, the energy conversion efficiency (η) of ZLD16 is comparable with an N719-based reference cell under the same conditions. Enhancement of photovoltaic performances from ZLD13 to ZLD16 is partly due to the decreased dark current and charge recombination rate. © the Partner Organisations 2014.

Authors


  •   Zhang, Ming-Dao (external author)
  •   Zhang, Zi-Yang (external author)
  •   Bao, Zhong-Qiu (external author)
  •   Ju, Ze-Min (external author)
  •   Wang, Xingyong
  •   Zheng, He-Gen (external author)
  •   Ma, Jing (external author)
  •   Zhou, Xing-Fu (external author)

Publication Date


  • 2014

Geographic Focus


Citation


  • Zhang, M., Zhang, Z., Bao, Z., Ju, Z., Wang, X., Zheng, H., Ma, J. & Zhou, X. (2014). Promising alkoxy-wrapped porphyrins with novel push-pull moieties for dye-sensitized solar cells. Journal of Materials Chemistry A, 2 (36), 14883-14889.

Scopus Eid


  • 2-s2.0-84906225900

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/3920

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 14883

End Page


  • 14889

Volume


  • 2

Issue


  • 36

Place Of Publication


  • United Kingdom