• Experimental results and basic considerations concerning injection and transport of electrons in the dye-sensitized colloidal sponge-type anatase TiO2 electrode

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    • Keywords


      Colloidal sponge-type TiO2 electrode; multiple trapping; electrolytic contact; anchored perylene chromophores

    • Abstract


      Electron transfer over the reaction distance corresponding to three saturated bonds occurs within 70 fs from the excited singlet state of anchored perylene chromophores to empty electronic levels in a sponge-type anatase TiO2 electrode. Injected electrons can be consumed in three different types of recombination processes at the interface with the electrolytic contact. Electron transport through the electrode follows a potential gradient that is set-up in the dark, corresponding to the difference between the Fermi levels of the two contact materials. It is dominated by multiple trapping and trap filling processes.

    • Author Affiliations


      F Willig1 2 B Burfeindt1 K Schwarzburg2 T Hannappel1 W Storck1

      1. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, Berlin - 14195, Germany
      2. Hahn-Meitner-Institut, Glienickerstr. 100, Berlin - 14109, Germany
    • Dates

  • Journal of Chemical Sciences | News

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