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 SM ISO690:2012POSTICA, Vasile, LUPAN, Oleg, ABABII, Nicolai, HOPPE, Mathias, ADELUNG, Rainer, CHOW, Lee, SHONTYA, Viktor, ASCHEHOUG, Patrick, VIANA, Bruno, PAUPORTE, Thierry. Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 9, 28 ianuarie - 1 februarie 2018, San Francisco. Bellingham, Washington USA: SPIE, 2018, Ediția 9, Vol.10533, pp. 1-7. ISBN 978-151061551-9. ISSN 0277786X. DOI: https://doi.org/10.1117/12.2294945 |
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| Proceedings of SPIE - The International Society for Optical Engineering Ediția 9, Vol.10533, 2018 |
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Conferința "Oxide-Based Materials and Devices " 9, San Francisco, Statele Unite ale Americii, 28 ianuarie - 1 februarie 2018 | |
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| DOI:https://doi.org/10.1117/12.2294945 | |
| Pag. 1-7 | |
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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. |
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| Cuvinte-cheie gas sensor, hydrogen gas, nanostructured films, ZnO |
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DataCite XML Export
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'> <creators> <creator> <creatorName>Postica, V.</creatorName> <affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Lupan, O.I.</creatorName> <affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Ababii, N.</creatorName> <affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Hoppe, M.</creatorName> <affiliation>Institute for Material Science, Christian-Albrechts-University of Kiel, Germania</affiliation> </creator> <creator> <creatorName>Adelung, R.</creatorName> <affiliation>Institute for Material Science, Christian-Albrechts-University of Kiel, Germania</affiliation> </creator> <creator> <creatorName>Chow, L.</creatorName> <affiliation>University of Central Florida, Statele Unite ale Americii</affiliation> </creator> <creator> <creatorName>Şontea, V.P.</creatorName> <affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation> </creator> <creator> <creatorName>Aschehoug, P.</creatorName> <affiliation>PSL Research University, Chimie ParisTech - CNRS, Institut de Recherche de Chimie Paris, Franţa</affiliation> </creator> <creator> <creatorName>Viana, B.</creatorName> <affiliation>PSL Research University, Chimie ParisTech - CNRS, Institut de Recherche de Chimie Paris, Franţa</affiliation> </creator> <creator> <creatorName>Pauporte, T.</creatorName> <affiliation>PSL Research University, Chimie ParisTech - CNRS, Institut de Recherche de Chimie Paris, Franţa</affiliation> </creator> </creators> <titles> <title xml:lang='en'>Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures</title> </titles> <publisher>Instrumentul Bibliometric National</publisher> <publicationYear>2018</publicationYear> <relatedIdentifier relatedIdentifierType='ISBN' relationType='IsPartOf'>978-151061551-9</relatedIdentifier> <subjects> <subject>gas sensor</subject> <subject>hydrogen gas</subject> <subject>nanostructured films</subject> <subject>ZnO</subject> </subjects> <dates> <date dateType='Issued'>2018</date> </dates> <resourceType resourceTypeGeneral='Text'>Conference Paper</resourceType> <descriptions> <description xml:lang='en' descriptionType='Abstract'><p>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 PdCl<sub>2</sub> 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 H<sub>2</sub> response with low selectivity. However, the PdO-functionalized samples showed excellent H<sub>2</sub> gas sensing properties with possibility to detect H<sub>2</sub> gas even at room temperature (gas response of ∼ 2). Up to 200°C operating temperature the samples are highly selective to H<sub>2</sub> 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. </p></description> </descriptions> <formats> <format>application/pdf</format> </formats> </resource>
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