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Keywords:

  • solid-state dye-sensitized solar cells;
  • ionic liquids;
  • solid electrolyte;
  • outdoor conditions;
  • liquid crystalline phase

Abstract

Two novel double-alkyl functionalized imidazolium ionic liquid crystals have successfully been utilized to demonstrate the benefits of the liquid crystalline phase on the ssDSSC performance. In particular, a good balance between dye regeneration and hole transport is only realized in the liquid crystalline phase. Devices that employ a single component ionic liquid based electrolyte show a remarkably stable efficiency during 1000 h under outdoor operation temperature conditions and 1 sun illumination.