Effect of electrolyte conductivity on the formation of a nanotubular TiO 2 photoanode for a dye-sensitized solar cell

Kiyoung Lee, Jiyoung Kim, Hyeyoung Kim, Yujin Lee, Yongsug Tak, Doohun Kim, Patrik Schmuki

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

Ordered TiO 2 nanotube arrays can be prepared by anodizing of Ti metal. However, the nanotubular TiO 2 structure shows a lack of reproducibility when the Ti metal is repetitively anodized in a prepared solution. The TiO 2 tube length increases as the number of anodizations increases. In this work, the effects of the solution conductivity and temperature on the formation of the nanotubular TiO 2 structure were analyzed using the measured current transients and tube morphology. Nanotubular TiO 2 was tested as an anode for a dye-sensitized solar cell and its performance was interpreted using electrochemical impedance spectroscopy in relation to a morphological study of the TiO 2 structure.

Original languageEnglish
Pages (from-to)1027-1031
Number of pages5
JournalJournal of the Korean Physical Society
Volume54
Issue number3
DOIs
StatePublished - Mar 2009

Keywords

  • Anodizing
  • DSSC
  • Electrochemical analysis
  • Ti surface treatment
  • TiO nanotube

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