Nano Archive

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

Suffner, Jens and Ágoston, Péter and Kling, Jens and Hahn, Horst (2010) Chemical vapor synthesis of fluorine-doped SnO2 (FTO) nanoparticles. Journal of Nanoparticle Research, 12 (7). pp. 2579-2588.

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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
Uncontrolled Keywords:Vapor phase synthesis - Tin oxide - Transparent conducting oxides (TCO) - Density functional theory (DFT) - Point defects
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Material Science > Nanochemistry
ID Code:9565
Deposited By:Lesley Tobin
Deposited On:10 Sep 2010 13:02
Last Modified:10 Sep 2010 13:02

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