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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrical Properties of Highly Conducting SnO2:Sb Nanocrystals Synthesized using a Nonaqueous Sol-Gel Method

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Conti, Tiago G. [1] ; Chiquito, Adenilson J. [2] ; da Silva, Rafael O. [1] ; Longo, Elson [1] ; Leite, Edson R. [1]
Total Authors: 5
[1] Univ Fed Sao Carlos, Dept Chem, LIEC, BR-13565905 Sao Paulo - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, NanoLab, BR-13565905 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of the American Ceramic Society; v. 93, n. 11, p. 3862-3866, NOV 2010.
Web of Science Citations: 17

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(-4) Omega . cm) was observed at room temperature in the SnO(2):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. (AU)

FAPESP's process: 98/14324-0 - Multidisciplinary Center for Development of Ceramic Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC