Enhanced photoelectrochemical performance of ZnO electrodes sensitized with N-719

Keita Kakiuchi, Eiji Hosono, Shinobu Fujihara

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213 Citations (Scopus)

Abstract

To improve dye-loading in photoanodes, microstructure of ZnO films was modified through the formation and pyrolysis of layered hydroxide zinc acetate (LHZA) grown in a methanolic solution of zinc acetate dihydrate. Appropriate annealing treatments for the films led to the formation of mesoporous microstructure with an average pore diameter of 12 nm. It was demonstrated that loading of N-719 in the ZnO films was successful without influence of protons in solutions, as evidenced by a large dye amount of 1.4 × 10-7 mol/cm2, and hence a high short-circuit photocurrent density of 12.6 mA/cm2. Sandwich-type dye-sensitized solar cells using the present ZnO/N-719 photoanode exhibited a conversion efficiency as high as 4.1% (AM-1.5, 100 mW/cm2).

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume179
Issue number1-2
DOIs
Publication statusPublished - 2006 Apr 1

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Keywords

  • Conversion efficiency
  • Dye-sensitized solar cells
  • Microstructure
  • N-719
  • Zinc oxide

ASJC Scopus subject areas

  • Bioengineering
  • Physical and Theoretical Chemistry

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