Surface passivation: The effects of CDCA co-adsorbent and dye bath solvent on the durability of dye-sensitized solar cells

Kun Mu Lee, Chia Yuan Chen, Shi Jhang Wu, Szu Chien Chen, Chun Guey Wu

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The long-term stability of dye-sensitized solar cells (DSCs) based on an amphiphilic ruthenium sensitizer, CYC-B6L was studied. When the surface of the TiO2 electrode was passivated with a co-adsorbent, chenodeoxycholic acid (CDCA), the resulting DSC reveals very good long-term stability with over 87% of initial performance under a 1000 h prolonged light-irradiation and thermal stress (60 °C) aging, which is as good as the state-of-the art robust device. The solvent used in dye bath also affects the long-term stability of the DSC devices. The effect of co-adsorbent and the impact of the dye bath solvents on the device durability were investigated using the electrochemical impedance spectroscopy.

Original languageEnglish
Pages (from-to)70-77
Number of pages8
JournalSolar Energy Materials and Solar Cells
Volume108
DOIs
StatePublished - 2013

Keywords

  • Co-adsorbent
  • Dye bath solvent
  • Dye-sensitized solar cells
  • Long-term stability

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