Jump to main content
Jump to site search

Issue 28, 2013
Previous Article Next Article

Dye-sensitized nanostructured crystalline mesoporous tin-doped indium oxide films with tunable thickness for photoelectrochemical applications

Author affiliations

Abstract

A simple route towards synthesis of nanostructured mesoporous Indium–Tin Oxide (templated nano-ITO) electrodes exhibiting both high conductivities and optimized bicontinuous pore-solid network is reported. The ITO films are first produced as an X-ray-amorphous, high surface area material, by adapting recently established template-directed sol–gel methods using Sn(IV) and In(III) salts. Carefully controlled temperature/atmosphere treatments convert the as-synthesized ITO films into nano-crystalline coatings with the cubic bixbyite structure. In particular, a multi-layered synthesis was successfully undertaken for tuning the film thickness. In order to evaluate the performances of templated nano-ITO as an electrode substrate for photoelectrochemical applications, photoelectrodes were prepared by covalent grafting of a redox-active dye, the complex [Ru(bpy)2(4,4′-(CH2PO3H2)2-bpy)]Cl21 (bpy = bipyridine). Surface coverage was shown to increase with the film thickness, from 0.7 × 10−9 mol cm−2 (one layer, 45 nm) to 3.5 × 10−9 mol cm−2 (ten layers, 470 nm), the latter value being ∼100 times larger than that for commercially available planar ITO. In the presence of an electron mediator, photocurrents up to 50 μA cm−2 have been measured under visible light irradiation, demonstrating the potential of this new templated nano-ITO preparation for the construction of efficient photoelectrochemical devices.

Graphical abstract: Dye-sensitized nanostructured crystalline mesoporous tin-doped indium oxide films with tunable thickness for photoelectrochemical applications

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 Feb 2013, accepted on 15 Apr 2013 and first published on 06 Jun 2013


Article type: Paper
DOI: 10.1039/C3TA10728K
J. Mater. Chem. A, 2013,1, 8217-8225

  •   Request permissions

    Dye-sensitized nanostructured crystalline mesoporous tin-doped indium oxide films with tunable thickness for photoelectrochemical applications

    W. Hamd, M. Chavarot-Kerlidou, J. Fize, G. Muller, A. Leyris, M. Matheron, E. Courtin, M. Fontecave, C. Sanchez, V. Artero and C. Laberty-Robert, J. Mater. Chem. A, 2013, 1, 8217
    DOI: 10.1039/C3TA10728K

Search articles by author

Spotlight

Advertisements