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Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures

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dc.contributor.author POSTICA, V.
dc.contributor.author LUPAN, O.
dc.contributor.author ABABII, N.
dc.contributor.author HOPPE, M.
dc.contributor.author ADELUNG, R.
dc.contributor.author CHOW, L.
dc.contributor.author SONTEA, V.
dc.contributor.author ASCHEHOUG, P.
dc.contributor.author VIANA, B.
dc.contributor.author PAUPORTÉ, Th.
dc.date.accessioned 2020-05-25T11:35:02Z
dc.date.available 2020-05-25T11:35:02Z
dc.date.issued 2018
dc.identifier.citation POSTICA, V., LUPAN, O., ABABII, N. et al. Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures. In: Oxide-based Materials and Devices: proc. of the 9th intern. conf., 28 Jan. - 1 Febr., 2018, San Francisco, 2018, p. 309-314. en_US
dc.identifier.uri https://doi.org/10.1117/12.2294945
dc.identifier.uri http://repository.utm.md/handle/5014/8380
dc.description Access full text - https://doi.org/10.1117/12.2294945 en_US
dc.description.abstract In this work, zinc oxide (ZnO) nanostructured films were grown using a simple synthesis from chemical solutions (SCS) approach from aqueous baths at relatively low temperatures (< 95 °C). The samples were doped with Pd (0.17 at% Pd) and functionalized with PdO nanoparticles (NPs) using the PdCl2 aqueous solution and subsequent thermal annealing at 650 °C for 30 min. The morphological, micro-Raman and optical properties of Pd modified samples were investigated in detail and were demonstrated to have high crystallinity. Gas sensing studies unveiled that compared to pure ZnO films, the Pd-doped ZnO (ZnO:Pd) nanostructured films showed a decrease in ethanol vapor response and slight increase in H2 response with low selectivity. However, the PdO-functionalized samples showed excellent H2 gas sensing properties with possibility to detect H2 gas even at room temperature (gas response of ~ 2). Up to 200 °C operating temperature the samples are highly selective to H2 gas, with highest response of ~ 12 at 150 °C. This study demonstrates that surface functionalization of n-ZnO nanostructured films with p-type oxides is very important for improvement of gas sensing properties. en_US
dc.language.iso en en_US
dc.publisher 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 UV light en_US
dc.subject nanostructured films en_US
dc.subject films en_US
dc.subject hydrogen en_US
dc.subject gas sensors en_US
dc.subject sensors en_US
dc.title Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures en_US
dc.type Article en_US


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