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Hydrogen sensing behavior of tellurium thin films studied by A.C. measurements

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dc.contributor.author TSIULYANU, Dumitru
dc.contributor.author MOCREAC, Olga
dc.date.accessioned 2023-11-20T09:55:35Z
dc.date.available 2023-11-20T09:55:35Z
dc.date.issued 2013
dc.identifier.citation TSIULYANU, Dumitru, MOCREAC, Olga. Hydrogen sensing behavior of tellurium thin films studied by A.C. measurements. In: Zaštita materijala. 2013, nr. 2, pp. 107-111. ISSN 0351-9465. e-ISSN 2466-2585. en_US
dc.identifier.issn 0351-9465
dc.identifier.issn 2466-2585
dc.identifier.uri https://idk.org.rs/brojevi-casopisa/izdanja-2013-godine/zastita-materijala-2-2013/
dc.identifier.uri http://repository.utm.md/handle/5014/24924
dc.description.abstract For the first time it is pointed out that tellurium films exhibit sensitivity to H2 at room temperature along with sensitivity to NO2. The hydrogen gas sensing performance of tellurium thin films was investigated by method of impedance spectroscopy. The impedance spectra are strongly influenced by gaseous environment but the effect of target gas is mainly due to variation of resistance of the film. It is assumed that the sensitivity of tellurium films to H2 arises because – of reducing effect of oxygen priory absorbed on the surface of the film from carrier (dry air) gas. The high concentration of oxygen in carrier gas promotes the formation of a catalytic gate, which can be removed by other gases including hydrogen. Removing of the priory-adsorbed oxygen results in decreasing of both, hole concentration and conductivity of the surface and intragrain regions of tellurium film. Due to impedance change in different direction, reducing H2 may be distinguished from oxidizing NO2, hence the effective, operating at room temperature H2 sensors can be manufactured using tellurium-based films. en_US
dc.language.iso en en_US
dc.publisher Engineering Society for Corrosion, Belgrade, Serbia en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject gas sensors en_US
dc.subject tellurium films en_US
dc.subject hydrogen gas sensing en_US
dc.title Hydrogen sensing behavior of tellurium thin films studied by A.C. measurements en_US
dc.type Article en_US


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