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Electrical Properties of Highly Conducting SnO^sub 2^:Sb Nanocrystals Synthesized using a Nonaqueous Sol-Gel Method

This work describes the synthesis of highly conducting antimony-doped tin oxide (ATO) nanocrystals prepared via a nonaqueous sol-gel route in the size range of 4-6 nm and provides insights into its electrical properties. The antimony composition was varied from 1 to 18 mol% and the lowest resistivit...

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Published in:	Journal of the American Ceramic Society 2010-11, Vol.93 (11), p.3862
Main Authors:	Conti, Tiago G, Chiquito, Adenilson J, Da Silva, Rafael O, Longo, Elson, Leite, Edson R
Format:	Article
Language:	English
Subjects:	Ceramics Chemical compounds Chemical synthesis Diffraction Electric properties Nanocrystals Spectrum analysis
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creator	Conti, Tiago G Chiquito, Adenilson J Da Silva, Rafael O Longo, Elson Leite, Edson R
description	This work describes the synthesis of highly conducting antimony-doped tin oxide (ATO) nanocrystals prepared via a nonaqueous sol-gel route in the size range of 4-6 nm and provides insights into its electrical properties. The antimony composition was varied from 1 to 18 mol% and the lowest resistivity (4.0 x 10^-4Ω-cm) was observed at room temperature in the SnO2:8.8 mol% Sb composition. The samples were evaluated by X-ray diffraction, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscope, and resistivity measurements were taken in the four-probe mode in the temperature range of 13-300 K. The results show highly crystalline nanoparticles in a monodisperse colloidal system, dependence on the shape of ATO nanoparticles as a function of Sb distribution, low resistivity, and semiconductor-metal transition. [PUBLICATION ABSTRACT]
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The antimony composition was varied from 1 to 18 mol% and the lowest resistivity (4.0 x 10^-4Ω-cm) was observed at room temperature in the SnO2:8.8 mol% Sb composition. The samples were evaluated by X-ray diffraction, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscope, and resistivity measurements were taken in the four-probe mode in the temperature range of 13-300 K. The results show highly crystalline nanoparticles in a monodisperse colloidal system, dependence on the shape of ATO nanoparticles as a function of Sb distribution, low resistivity, and semiconductor-metal transition. 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subjects	Ceramics Chemical compounds Chemical synthesis Diffraction Electric properties Nanocrystals Spectrum analysis
title	Electrical Properties of Highly Conducting SnO^sub 2^:Sb Nanocrystals Synthesized using a Nonaqueous Sol-Gel Method
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