TiO2 films obtained by microwave-activated chemical-bath deposition used to improve TiO2-conducting glass contact

I. Zumeta, J. A. Ayllón, B. González, X. Domenech, E. Vigil

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29 Citations (Scopus)


In traditional solar cells, metal-semiconductor contacts used to extract photogenerated carriers are very important. In dye-sensitized solar cells (DSSC) not much attention has been given to contact between the TiO2 and the transparent conducting glass (TCO), which is used instead of a metal contact to extract electrons. TiO2 layers obtained by microwave-activated chemical-bath deposition (MW-CBD) are proposed to improve TiO2 contact to conducting glass. Spectra of incident photon to current conversion efficiency (IPCE) are obtained for two-photoelectrode TiO2 photoelectrochemical cells. IPCE spectra show higher values when TiO2 double layer photoelectrodes are used. In these, the first layer or contacting layer is made by MW-CBD. Best results are obtained for double layer photoelectrodes on FTO (SnO2:F) as conducting oxide substrate. Modeling of IPCE spectra reveals the importance of electrical contact and electron extraction rate at the TiO2/TCO interface. © 2009 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1728-1732
JournalSolar Energy Materials and Solar Cells
Issue number10
Publication statusPublished - 1 Oct 2009


  • Dye-sensitized solar cells
  • Microwave-activated chemical-bath deposition
  • Nanocrystalline TiO 2
  • TiO /TCO contact 2


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