Electric and morphologic properties of SnO 2 films prepared by modified sol–gel process

Tin dioxide (SnO 2) is used in several technological applications such as sensors, catalysts, and electro-optical equipments. Many of these applications involve the use of SnO 2 in the form of ceramic thin film. The preparation of SnO 2 films has been widely studied and different methods have been p...

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Bibliographic Details
Published inMaterials letters Vol. 57; no. 28; pp. 4378 - 4381
Main Authors Dal Santos, M.A., Antunes, A.C., Ribeiro, C., Borges, C.P.F., Antunes, S.R.M., Zara, A.J., Pianaro, S.A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2003
Subjects
Characterization
LPG
Sensor
SnO 2
Sol–gel
Characterization
SnO 2
LPG
Films
Sol–gel
Sensor
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Summary:Tin dioxide (SnO 2) is used in several technological applications such as sensors, catalysts, and electro-optical equipments. Many of these applications involve the use of SnO 2 in the form of ceramic thin film. The preparation of SnO 2 films has been widely studied and different methods have been proposed to synthesize pure or doped SnO 2. In this work, SnO 2 films produced by the modified sol–gel method, using tin tartrate as a precursor, are presented. The sol stability was verified using UV–visible spectroscopy. The obtained films were characterized by X-ray diffraction (XRD), optical microscopy, electrical measurements, scanning electron microscopy (SEM), and X-ray fluorescence (FRX). The obtained films presented a thickness of 0.3 μm and an amorphous structure. The sensor electrical sensibility at 300 °C in the presence of LPG was clearly shown.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(03)00328-8