Determining the Locus for Photocarrier Recombination in Dye-Sensitized Solar Cells

Kai Zhu, E. A. Schiff, N. G. Park, J. Van De Lagemaat, A. J. Frank

Research output: Contribution to journalArticlepeer-review

91 Scopus Citations


We present intensity-modulated photocurrent and infrared transmittance measurements on dye-sensitized solar cells based on a mesoporous titania (TiO2) matrix immersed in an iodine-based electrolyte. Under short-circuit conditions, we show that an elementary analysis accurately relates the two measurements. Under open-circuit conditions, infrared transmittance, and photovoltage measurements yield information on the characteristic depth at which electrons recombine with ions (the "locus of recombination"). For one particular series of samples recombination occurred near the substrate supporting the titania film, as opposed to homogeneously throughout the film.

Original languageAmerican English
Pages (from-to)685-687
Number of pages3
JournalApplied Physics Letters
Issue number4
StatePublished - 2002

NREL Publication Number

  • NREL/JA-590-32046


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