Improved performance of porphyrin-based dye sensitised solar cells by phosphinic acid surface treatment

Alessandra Allegrucci, Naomi A. Lewcenko, Attila J. Mozer, Lynn Dennany, Pawel Wagner, David L. Officer, Kenji Sunahara, Shogo Mori, Leone Spiccia

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Chemical surface treatment of porphyrin-sensitised titania films using bis-(4-methoxyphenyl) phosphinic acid after dye adsorption, results in large improvements in DSSC efficiencies which originate primarily from higher short circuit currents. The result was attributed to a positive shift in the TiO2 quasi-Fermi level with simultaneous retardation of charge recombination. High device performances have been achieved even using simplified electrolyte matrices devoid of the common additives, LiI and t-butylpyridine.

Original languageEnglish
Pages (from-to)1069-1073
Number of pages5
JournalEnergy & Environmental Science
Issue number10
Early online date22 Jun 2009
Publication statusPublished - 2009


  • charge recombination
  • nanocrystalline TiO2
  • films
  • electrolytes
  • cation
  • coadsorbent
  • complexes
  • ruthenium

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