Electrical characterization of hydrothermally synthesized manganese dioxide nanowires with regard to NO2 adsorption/desorption thermodynamics

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dc.contributor.authorSmísitel, Petrcs
dc.contributor.authorŠimůnková, Helenacs
dc.contributor.authorChmela, Ondřejcs
dc.contributor.authorClaros Vargas, Martha Carmiňacs
dc.contributor.authorVallejos Vargas, Stellacs
dc.contributor.authorHubálek, Jaromírcs
dc.coverage.issue1cs
dc.coverage.volume48cs
dc.date.issued2023-09-18cs
dc.description.abstractSingle nanowires (NWs) are promising structures to improve sensitivity and selectivity of metal-oxide (MOX) gas sensors. Self-made MnO2 nanowires were hydrothermally synthesized and electrically characterized in different ambient. The nanowires were approximately 4-10 µm long and about 100 nm in diameter. The nanowires were suspended in water and deposited on two parallel gold electrodes having separation distance of 4 µm. Single nanowires were aligned perpendicularly across the gold electrodes by dielectrophoresis (DEP) technique. The number of the NWs was determined by scanning electron microscopy. The conductivity was measured in synthetic air, nitrogen, and in NO2 ambient. The tests consisted in measuring resistivity of the NWs in relation to temperature of the bottom-placed heater under the chip. The temperature went from room temperature up to 300°C. The resistivity changes were observed accounting for oxygen reduction on the NWs surface as the electrons were moving from the NWs to the oxygen. The resistivity was explored at a constant current arrangement test. Based on resistivity changes, electrical properties, such as activation energy and a type of semiconductor (p-type in case of MnO2), were evaluated. Mott-Schottky analysis was applied to estimate acceptor concentration, as well as NWs permittivity.en
dc.formattextcs
dc.format.extent1-6cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEngineering Proceedings. 2023, vol. 48, issue 1, p. 1-6.en
dc.identifier.doi10.3390/CSAC2023-14883cs
dc.identifier.issn2673-4591cs
dc.identifier.orcid0009-0008-3799-2230cs
dc.identifier.orcid0000-0003-1800-4686cs
dc.identifier.orcid0000-0002-5480-9628cs
dc.identifier.orcid0000-0002-7415-5414cs
dc.identifier.orcid0000-0002-7496-2558cs
dc.identifier.other185059cs
dc.identifier.researcheridLFU-3099-2024cs
dc.identifier.researcheridABF-3975-2021cs
dc.identifier.researcheridA-8550-2014cs
dc.identifier.researcheridD-7753-2012cs
dc.identifier.scopus58165684700cs
dc.identifier.scopus25926769300cs
dc.identifier.scopus55934067000cs
dc.identifier.scopus57207501711cs
dc.identifier.urihttp://hdl.handle.net/11012/244168
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofEngineering Proceedingscs
dc.relation.urihttps://www.mdpi.com/2673-4591/48/1/35cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2673-4591/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectMnO2 nanowiresen
dc.subjectdielectrophoresisen
dc.subjectgas sensingen
dc.subjectresistivityen
dc.subjectMott-Schottky analysisen
dc.titleElectrical characterization of hydrothermally synthesized manganese dioxide nanowires with regard to NO2 adsorption/desorption thermodynamicsen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-185059en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:41:15en
sync.item.modts2025.01.17 19:35:29en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav mikroelektronikycs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Chytré nanonástrojecs
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