Electrodeposition of dye-doped titania thin films

Ronen Shacham, David Avnir*, Daniel Mandler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

We extend our novel low-voltage electrochemical method for oxide thin film formation from sol-gel monomers to include entrapment of organic molecules within the films. We also describe an extension of the method to titania thin films, which are obtained from titanium tetra-n-propoxide in alcoholic solutions by applying potentials in the range of +2.0 to -1.4 V to indium tin oxide electrodes. The film thickness (ranging between 20-1000 nm) is controllable by changing either the potential or the duration of its application. We demonstrate that this electrochemical method provides a convenient way for entrapment of organic dopants within the film. Four dyes were used for that purpose: Basic Blue 41, methylene-blue, tris(2,2′-bipyridine)iron(II) and tris(2,2′bipyridine)ruthenium(II).

Original languageAmerican English
Pages (from-to)329-334
Number of pages6
JournalJournal of Sol-Gel Science and Technology
Volume31
Issue number1-3 SPEC.ISS.
DOIs
StatePublished - Aug 2004

Bibliographical note

Funding Information:
This project was supported by the Israel Ministry for Science through the Tashtiot Projects (projects 2042 and 1095). We also thank the Horowitz Foundation for its financial support.

Keywords

  • Dye entrapment and doping
  • Electrodeposition
  • Sol-gel
  • Thin film
  • Titania

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