Sol-gel synthesis of nanostructured indium tin oxide with controlled morphology and porosity

L. Kõrösi, Alice Scarpellini, P. Petrik, Szilvia Papp, I. Dékány

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Nanostructured indium tin oxide (ITO) powders and thin films differing in morphology and porosity were prepared by a sol-gel method. In3+ and Sn4+ were hydrolyzed in aqueous medium through the use of ethanolamine (EA) or sodium acetate (AC). X-ray diffraction measurements demonstrated that both EA and AC furnished indium tin hydroxide, which became nanocrystalline after aging for one day. The indium tin hydroxide samples calcined at 550°C afforded ITO with a cubic crystal structure, but the morphology differed significantly, depending on the agent used for hydrolysis. Electron microscopy revealed the formation of round monodisperse nanoparticles when AC was used, whereas the application of EA led to rod-like ITO nanoparticles. Both types of nanoparticles were suitable for the preparation of transparent and conductive ITO thin films. The influence of the morphology and porosity on the optical properties is discussed.

Original languageEnglish
Pages (from-to)725-731
Number of pages7
JournalApplied Surface Science
Volume320
DOIs
Publication statusPublished - Nov 30 2014

Fingerprint

Tin oxides
Indium
Ethanolamine
Sol-gels
Porosity
Ethanolamines
Tin
Nanoparticles
Acetates
Sodium Acetate
Thin films
Powders
Sol-gel process
Electron microscopy
Oxide films
Hydrolysis
Optical properties
Aging of materials
Crystal structure
X ray diffraction

Keywords

  • ITO nanoparticles
  • Morphology
  • Sol-gel method
  • Spectroscopic ellipsometry
  • Spin-coating

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Sol-gel synthesis of nanostructured indium tin oxide with controlled morphology and porosity. / Kõrösi, L.; Scarpellini, Alice; Petrik, P.; Papp, Szilvia; Dékány, I.

In: Applied Surface Science, Vol. 320, 30.11.2014, p. 725-731.

Research output: Contribution to journalArticle

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