SnO2-Bi2O3 and SnO2-Sb2O3 gas sensors obtained by soft chemical method

In this work, SnO2-Bi2O3 and SnO2-Sb2O3 nanoparticles were obtained by using polymeric precursor method. Powders were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and differential thermal analysis and thermogravimetric analysis (DTA/TGA). Thick films were deposited on alumina substrates on which electrodes have been previously deposited by sputtering. The electric response of thick films was measured under oxygen and carbon monoxide atmospheres. It was determined that bismuth addition improves the sensor response to the oxygen presence. On the other hand, antimony addition diminishes the sample resistance due to the possible replacement of Sn4+ by Sb5+.

Palabras clave: Electrical Properties , Films , Powders-Chemical Preparation , Sensors

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Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)

Identificadores

URI: http://hdl.handle.net/11336/76074

URL: http://www.sciencedirect.com/science/article/pii/S0955221907001562

DOI: http://dx.doi.org/10.1016/j.jeurceramsoc.2007.02.106

Colecciones

Articulos(INTEMA)
Articulos de INST.DE INV.EN CIENCIA Y TECNOL.MATERIALES (I)

Citación

Montenegro Hernandez, Alejandra; Ponce, Miguel Adolfo; Castro, Miriam Susana; Rodriguez Paez, Jorge Enrique; SnO2-Bi2O3 and SnO2-Sb2O3 gas sensors obtained by soft chemical method; Elsevier; Journal of the European Ceramic Society; 27; 13-15; 4-5-2007; 4143-4146

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