The effect of ultraviolet irradiation on the ultra-thin HfO2 based CO gas sensor

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dc.contributor.authorKaraduman, Irmak
dc.contributor.authorBarin, Özlem
dc.contributor.authorYıldız, Dilber Esra
dc.contributor.authorAcar, Selim
dc.date.accessioned2019-05-10T09:38:54Z
dc.date.available2019-05-10T09:38:54Z
dc.date.issued2015
dc.departmentHitit Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü
dc.description.abstractIn this work, an effort has been made to fabricate ultrathin HfO2/Al2O3 sample by atomic layer deposition method for the fast detection of CO gas at room temperature. The effect of the operating temperature and the UV light on the gas sensing characteristics has been studied. We investigated the optimum operating temperature for the sample by sensing 25 ppm CO and CO2 gases from room temperature to 150 °C for 10 °C steps. The maximum response was obtained at 150 °C for both gases in the measurement temperature range. Also, the photoresponse measurements clearly show the effect of UV light on the sample. At room temperature, sensor showed superior response (14%) for 5 ppm CO gas. The response time of sensor is 6 s to 5 ppm CO gas concentration. The ultrathin HfO2 based sample shows acceptable gas sensitivity for 5 ppm CO gas at room temperature under UV light irradiation. © 2015 AIP Publishing LLC.
dc.identifier.citationKaraduman, I., Barin, Ö., Yıldız, D. E., & Acar, S. (2015). The effect of ultraviolet irradiation on the ultra-thin HfO2 based CO gas sensor. Journal of Applied Physics, 118(17), 174501.
dc.identifier.doi10.1063/1.4935139
dc.identifier.issn0021-8979
dc.identifier.issue17en_US
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1063/1.4935139
dc.identifier.urihttps://hdl.handle.net/11491/544
dc.identifier.volume118en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmerican Institute of Physics Inc.
dc.relation.ispartofJournal of Applied Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subject[Belirlenecek]en_US
dc.titleThe effect of ultraviolet irradiation on the ultra-thin HfO2 based CO gas sensor
dc.typeArticle

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