TiO2 nanotube layers on Ti substrates for high efficiency flexible dye-sensitized solar cells

Keisuke Nakayama, Takaya Kubo, Yoshinori Nishikitani

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We report herein the promising application of TiO2 nanotubes formed on a Ti substrate to a flexible dye-sensitized solar cell illuminated from the back-side. We found that anodization of a Ti substrate in an extremely dilute perchloric acid solution yielded the formation of a high aspect-ratio TiO2 nanotube layer on the Ti substrate. The nanotube layer has the equivalent surface area for dye-adsorption to a TiO2 nanoparticle layer. This novel one-dimensional TiO2 material provided efficient carrier generation interfaces as well as an efficient transport pathway for the carriers, evidenced by the enhanced photocurrent and photovoltage of the cell.

Original languageEnglish
Pages (from-to)1123011-1123013
Number of pages3
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2008 Nov
Externally publishedYes


ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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