Preparation and electrochemical properties of nanoporous transparent antimony-doped tin oxide (ATO) coatings

Sudhanshu Sharma, Alex M. Volosin, Dominik Schmitt, Dong Kyun Seo

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Nanoporous antimony-doped tin oxide (ATO) coatings with high surface area, optical transparency and electron transfer properties have been prepared using an interpenetrating inorganic-organic hybrid sol-gel approach. UV-Vis and X-ray photoelectron spectroscopic studies were carried out on the prepared materials in addition to the characterization of their microstructures with scanning electron microscopy, transmission electron microscopy, and nitrogen sorption experiments. Cyclic voltammetry (CV) and impedance spectroscopy were employed to characterize the electrochemical and electron transfer properties of the coatings in both acidic and neutral media with an Fe3+/Fe 2+ redox couple. The material had a specific surface area of over 90 m2 g-1 with a bimodal pore distribution with two distinctive peaks at ca. 8 and 40 nm. The electrochemical capacitance of the material was about 100 times as high as the value obtained for a commercially available nonporous fluorine-doped tin oxide (FTO) electrode. The estimated electron transfer rate of the former was three times larger than that of the FTO. The optical transparency, high surface area and high electron transfer rate of the nanoporous ATO coatings make the material well suited for diverse photoelectrochemical applications.

Original languageEnglish
Pages (from-to)699-706
Number of pages8
JournalJournal of Materials Chemistry A
Volume1
Issue number3
DOIs
Publication statusPublished - Jan 21 2013

Fingerprint

Antimony
Tin oxides
Electrochemical properties
Coatings
Fluorine
Electrons
Transparency
Photoelectrons
Specific surface area
Cyclic voltammetry
Sol-gels
Sorption
Capacitance
Nitrogen
Spectroscopy
Transmission electron microscopy
X rays
Microstructure
Scanning electron microscopy
Electrodes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Preparation and electrochemical properties of nanoporous transparent antimony-doped tin oxide (ATO) coatings. / Sharma, Sudhanshu; Volosin, Alex M.; Schmitt, Dominik; Seo, Dong Kyun.

In: Journal of Materials Chemistry A, Vol. 1, No. 3, 21.01.2013, p. 699-706.

Research output: Contribution to journalArticle

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