Dye-Sensitized solar cells: Sensitizer-Dependent injection into ZnO nanotube electrodes

Rebecca A. Jensen, Hal Van Ryswyk, Chunxing She, Jodi M. Szarko, Lin X. Chen, Joseph T. Hupp

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Two poi'phyrin-based dyes with carboxylic acid tethers of differing acidity in both protonated and deprotonated forms were examined on ZnO nanotube electrodes. All of the dyes have similar surface coverage, but only the more acidic dye in the acid form injects electrons well; this dye is the only one that corrodes the ZnO. In control experiments on TiO2 nanoparticle electrodes, both dyes load and inject in protonated and deprotonated forms. These results are consistent with a requirement that the dye must partially corrode the ZnO surface in order for efficient injection to occur. Alternatively, it may possibly point to a coupling of electron injection to proton uptake

Original languageEnglish
Pages (from-to)1401-1404
Number of pages4
Issue number3
Publication statusPublished - Feb 2 2010

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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