The role of conducting-oxide-substrate type and morphology in TiO 2 films grown by microwave chemical bath deposition (MW-CBD) and their photovoltaic characteristics

Elena Vigil, Bernardo González, Inti Zumeta, Sergilus Docteur, Ana M. Peiró, David Gutiérrez-Tauste, Concepción Domingo, Xavier Domènech, JoséA A. Ayllón

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

MW-CBD is a low-temperature deposition technique that gives transparent and well-adhered TiO2 thin films. TiO2 films on transparent conducting oxide are important for dye-sensitized solar cells, extremely thin absorber solar cells and for electrochromic devices. We study how the growth process of TiO2 films using MW-CBD is influenced by substrate type using SnO2:F and ITO substrates. Crystallinity of the films is mainly determined by the precursor solution rather than by the substrates studied, though morphology of the substrate influences the morphology of the films. Using the SnO2:F substrate more texturized TiO2 films grow. All films showed photovoltaic behavior. Current near short-circuit current in the I-V characteristic are within experimental uncertainty for films obtained on different substrate type but with the same precursor solution. Films obtained on SnO2:F with the precursor solution based on fluorine-complexed titanium(IV) exhibit the best results. In this case, open-circuit photovoltage increases appreciably.

Original languageEnglish
Pages (from-to)366-374
Number of pages9
JournalJournal of Crystal Growth
Volume262
Issue number1-4
DOIs
StatePublished - 15 Feb 2004
Externally publishedYes

Keywords

  • A2. Growth from solutions
  • A3. Polycrystalline deposition
  • B1. Nanomaterials
  • B2. Semiconducting materials
  • B3. Solar cells

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