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Chemical vapor synthesis of fluorine-doped SnO2 (FTO) nanoparticles

Suffner, Jens and Agoston, Peter and Kling, Jens and Hahn, Horst (2010):
Chemical vapor synthesis of fluorine-doped SnO2 (FTO) nanoparticles.
In: J. Nanoparticle Res., Springer, pp. 2579-2588, 12, (7), ISSN 1388-0764,
[Online-Edition: http://www.springerlink.com/content/n33036978k770mm8/],
[Article]

Abstract

The synthesis and properties of nanocrystalline SnO2 particles and the effects of doping with fluorine are reported in this work. Simultaneous thermal decomposition of tetramethyltin and difluoromethane in the chemical vapor synthesis process was employed. The nanoparticles were analyzed with respect to their structure using X-ray diffraction followed by Rietveld refinement, transmission electron microscopy, nitrogen adsorption, X-ray photoelectron spectroscopy, and Fourier-transformed infrared spectroscopy. Based on the experimental results, a point defect model is proposed, which is supported by density functional theory calculations. At low fluorine concentrations, fluorine substitutes oxygen on a lattice site, while fluorine is located interstitially at high concentrations. The formation of an associated fluorine substitutional-interstitial pair is observed instead of isolated interstitial fluorine.

Item Type: Article
Erschienen: 2010
Creators: Suffner, Jens and Agoston, Peter and Kling, Jens and Hahn, Horst
Title: Chemical vapor synthesis of fluorine-doped SnO2 (FTO) nanoparticles
Language: English
Abstract:

The synthesis and properties of nanocrystalline SnO2 particles and the effects of doping with fluorine are reported in this work. Simultaneous thermal decomposition of tetramethyltin and difluoromethane in the chemical vapor synthesis process was employed. The nanoparticles were analyzed with respect to their structure using X-ray diffraction followed by Rietveld refinement, transmission electron microscopy, nitrogen adsorption, X-ray photoelectron spectroscopy, and Fourier-transformed infrared spectroscopy. Based on the experimental results, a point defect model is proposed, which is supported by density functional theory calculations. At low fluorine concentrations, fluorine substitutes oxygen on a lattice site, while fluorine is located interstitially at high concentrations. The formation of an associated fluorine substitutional-interstitial pair is observed instead of isolated interstitial fluorine.

Journal or Publication Title: J. Nanoparticle Res.
Volume: 12
Number: 7
Publisher: Springer
Uncontrolled Keywords: Vapor phase synthesis , Tin oxide � Transparent conducting oxides (TCO), Density functional theory (DFT), Point defects
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science > Structure Research
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 22 Feb 2012 16:25
Official URL: http://www.springerlink.com/content/n33036978k770mm8/
Related URLs:
Funders: The authors thank the State of Hesse for the financial support for a major equipment grant., Financial support by the Deutsche Forschungsgemeinschaft (DFG) through individual grants and through the Center for Functional Nanostructures (CFN) is gratefully acknowledged.
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