Dye stabilization and enhanced photoelectrode wettability in water-based dye-sensitized solar cells through post-assembly atomic layer deposition of TiO2

Ho Jin Son, Chaiya Prasittichai, Joseph E. Mondloch, Langli Luo, Jinsong Wu, Dong Wook Kim, Omar K. Farha, Joseph T Hupp

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Detachment (desorption) of molecular dyes from photoelectrodes is one of the major limitations for the long-term operation of dye-sensitized solar cells. Here we demonstrate a method to greatly inhibit this loss by growing a transparent metal oxide (TiO2) on the dye-coated photoelectrode via atomic layer deposition (ALD). TiO2-enshrouded sensitizers largely resist detachment, even in pH 10.7 ethanol, a standard solution for intentional removal of molecular dyes from photoelectrodes. Additionally, the ALD post-treatment renders the otherwise hydrophobic dye-coated surface hydrophilic, thereby enhancing photoelectrode pore-filling with aqueous solution.

Original languageEnglish
Pages (from-to)11529-11532
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number31
DOIs
Publication statusPublished - Aug 7 2013

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Wettability
Atomic layer deposition
Wetting
Coloring Agents
Dyes
Stabilization
Water
Oxides
Desorption
Ethanol
Metals
Dye-sensitized solar cells

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Dye stabilization and enhanced photoelectrode wettability in water-based dye-sensitized solar cells through post-assembly atomic layer deposition of TiO2 . / Son, Ho Jin; Prasittichai, Chaiya; Mondloch, Joseph E.; Luo, Langli; Wu, Jinsong; Kim, Dong Wook; Farha, Omar K.; Hupp, Joseph T.

In: Journal of the American Chemical Society, Vol. 135, No. 31, 07.08.2013, p. 11529-11532.

Research output: Contribution to journalArticle

Son, Ho Jin ; Prasittichai, Chaiya ; Mondloch, Joseph E. ; Luo, Langli ; Wu, Jinsong ; Kim, Dong Wook ; Farha, Omar K. ; Hupp, Joseph T. / Dye stabilization and enhanced photoelectrode wettability in water-based dye-sensitized solar cells through post-assembly atomic layer deposition of TiO2 In: Journal of the American Chemical Society. 2013 ; Vol. 135, No. 31. pp. 11529-11532.
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