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Noise spectroscopy of gas sensors
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2008 (English)In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 8, no 5-6, 786-790 p.Article in journal (Refereed) Published
Abstract [en]

We study current-voltages and low-frequency noise characteristics of the metal-porous silicon-silicon single crystal-metal structure with 50% and 73% porosity of porous silicon. The study is performed in dry air and in a mix of dry air with carbon monoxide of different concentrations. The Hooge noise parameter alpha(H) and the parameter gamma in the frequency dependence of the noise voltage spectral density S-U (f) were determined from experimental data. High sensitivity of spectral dependence of noise to gas concentration allows offering powerful method for determination of gas concentration in the air or environment.

Place, publisher, year, edition, pages
2008. Vol. 8, no 5-6, 786-790 p.
Keyword [en]
carbon monoxide, current-voltage characteristics, gas sensor, noise spectral density, porous silicon (PS), selectivity, sensitivity
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-109085DOI: 10.1109/JSEN.2008.923184ISI: 000258763200053OAI: oai:DiVA.org:uu-109085DiVA: diva2:248816
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2016-04-12Bibliographically approved

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Granqvist, Claes-Göran
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