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H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures

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dc.contributor.author ABABII, N.
dc.contributor.author POSTICA, V.
dc.contributor.author HOPPE, M.
dc.contributor.author ADELUNG, R.
dc.contributor.author LUPAN, O.
dc.contributor.author RAILEAN, S.
dc.contributor.author PAUPORTÉ, T.
dc.contributor.author VIANA, B.
dc.date.accessioned 2020-08-21T09:34:35Z
dc.date.available 2020-08-21T09:34:35Z
dc.date.issued 2017
dc.identifier.citation ABABII, N., POSTICA, V., HOPPE, M. et al. H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures. In: Oxide-based Materials and Devices: proc. of the 8th intern. conf.: 28 Jan. - 2 Febr., 2017, San Francisco, California, United States, 2017, V10105. en_US
dc.identifier.uri https://doi.org/10.1117/12.2253153
dc.identifier.uri http://repository.utm.md/handle/5014/9113
dc.description Access full text - https://doi.org/10.1117/12.2253153 en_US
dc.description.abstract The most important parameters of gas sensors are sensitivity and especially high selectivity to specific chemical species. To improve these parameters we developed sensor structures based on layered semiconducting oxides, namely CuO/Cu2O, CuO:Zn/Cu2O:Zn, NiO/ZnO. In this work, the ZnO/CuxO (where x = 1, 2) bi-layer heterostructure were grown via a simple synthesis from chemical solution (SCS) at relatively low temperatures (< 95 °C), representing a combination of layered n-type and p-type semiconducting oxides which are widely used as sensing material for gas sensors. The main advantages of the developed device structures are given by simplicity of the synthesis and technological cost-efficiency. Structural investigations showed high crystallinity of synthesized layers confirming the presence of zinc oxide nanostructures on the surface of the copper oxide film deposited on glass substrate. Structural changes in morphology of grown nanostructures induced by post-grown thermal annealing were observed by scanning electron microscopy (SEM) investigations, and were studied in detail. The influence of thermal annealing type on the optical properties was also investigated. As an example of practical applications, the ZnO/CuxO bi-layer heterojunctions and ZnO/CuO/Cu2O three-layered structures were integrated into sensor structures and were tested to different types of reducing gases at different operating temperatures (OPT), showing promising results for fabrication of selective gas sensors. en_US
dc.language.iso en en_US
dc.publisher Society of Photo-Optical Instrumentation Engineers, SPIE 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 heterostructures en_US
dc.title H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures en_US
dc.type Article en_US


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