De, Saptarshi and Venkataramani, Narayanan and Prasad, Shiva and Dusane, Rajiv Onkar and Presmanes, Lionel and Thimont, Yohann and Tailhades, Philippe
and Baco-Carles, Valérie
and Bonningue, Corine
and Thondiyanoor Pisharam, Sumangala and Barnabé, Antoine
Ethanol and Hydrogen Gas-Sensing Properties of CuO–CuFe2O4 Nanostructured Thin Films.
(2018)
IEEE Sensors Journal, 18 (17). 6937-6945. ISSN 1530-437X
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 2MB |
Official URL: https://doi.org/10.1109/JSEN.2018.2849330
Abstract
Nanocrystalline CuO-CuFe 2 O 4 composite thin films were developed from CuFeO 2 ceramic target using a radio-frequency sputtering method followed by a thermal oxidation process. This fabrication process helps to develop porous sensing layers which are highly desirable for solid-state resistive gas sensors. Their sensing properties toward ethanol and hydrogen gas in dry air were examined at the operating temperatures ranging from 250 °C to 500 °C. The electrical transients during adsorption and desorption of the test gases were fitted with the Langmuir single site gas adsorption model. A composite thin film with a total thickness of 25 nm showed highest response (79%) toward hydrogen (500 ppm) at the operating temperature of 400 °C. The shortest response time (τ res ) was found to be ~60 and ~90 s for hydrogen and ethanol, respectively. The dependence of the response of the sensor on gas concentration (10-500 ppm) was also studied.
Item Type: | Article |
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HAL Id: | hal-02319546 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Université de Picardie Jules Verne (FRANCE) Other partners > Indian Institute of Technology Bombay - IIT Bombay (INDIA) |
Laboratory name: | |
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Deposited On: | 18 Oct 2019 07:34 |
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