UV light activated gas sensor for NO2 detection

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dc.authorid0000-0003-2212-199X
dc.contributor.authorKaraduman, Irmak
dc.contributor.authorYıldız, Dilber Esra
dc.contributor.authorSincar, Mehmet M.
dc.contributor.authorAcar, Selim
dc.date.accessioned2019-05-13T09:03:43Z
dc.date.available2019-05-13T09:03:43Z
dc.date.issued2014
dc.departmentHitit Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü
dc.description.abstractIn the present study, UV light activated gas sensor was investigated for Al/Al2O3/p-Si and Al/TiO2/Al2O3/p-Si samplesby atomic layer deposition method (ALD). Generally, in order to obtain the sensing performance, traditional metal oxide semiconductor gas sensors are operated at 100-400 °C. However, this temperature range limits their applications to flammable gases, and causes high power consumption. It is important to note that sensing performance experiments should have been performed at room temperature. With the support of UV light, gas sensors do not need to be heated and they can work at room temperature easily. For this purpose, electrical measurements have been performed on sensing performance with and without UV irradiation for dedection of NO2 gas. With the help of UV irradition, we obtained good sensitivity at the room temperature for Al/TiO2/Al2O3/p-Sistructure but under the same conditions no result was obtained for Al/Al2O3/p-Si structure. Without UV irradiation, there was no sensitivity for both.We observed that increasing of sensitivities at the room temperature show a direct effect of the light on the adsorbed oxygen ions. According to the relation of photocatalytic reaction and photoactivated gas sensing process, we concluded that TiO2 might be an acceptable sensor for detection of nitrogen dioxide (NO2) at room temperature under UV illumination.
dc.identifier.citationKaraduman, I., Yıldız, D. E., Sincar, M. M., Acar, S. (2014). UV light activated gas sensor for NO2 detection. Materials Science in Semiconductor Processing, 28, 43-47.
dc.identifier.doi10.1016/j.mssp.2014.04.011
dc.identifier.endpage47en_US
dc.identifier.issn1369-8001
dc.identifier.scopusqualityQ1
dc.identifier.startpage43en_US
dc.identifier.urihttps://doi.org/10.1016/j.mssp.2014.04.011
dc.identifier.urihttps://hdl.handle.net/11491/1523
dc.identifier.volume28en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Ltd
dc.relation.ispartofMaterials Science in Semiconductor Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectGas Sensoren_US
dc.subjectNitrogen Dioxide (NO2)en_US
dc.subjectUV Illuminationen_US
dc.titleUV light activated gas sensor for NO2 detection
dc.typeArticle

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