Graphene-based temperature sensors–comparison of the temperature and humidity dependences

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dc.contributor.authorŠtulík, Jiří
dc.contributor.authorMusil, Ondřej
dc.contributor.authorJosefík, František
dc.contributor.authorKadlec, Petr
dc.date.accessioned2022-07-04T10:00:12Z
dc.date.available2022-07-04T10:00:12Z
dc.date.issued2022
dc.description.abstract-translatedFour different graphene-based temperature sensors were prepared, and their temperature and humidity dependences were tested. Sensor active layers prepared from reduced graphene oxide (rGO) and graphene nanoplatelets (Gnp) were deposited on the substrate from a dispersion by air brush spray coating. Another sensor layer was made by graphene growth from a plasma discharge (Gpl). The last graphene layer was prepared by chemical vapor deposition (Gcvd) and then transferred onto the substrate. The structures of rGO, Gnp, and Gpl were studied by scanning electron microscopy. The obtained results confirmed the different structures of these materials. Energy-dispersive X-ray diffraction was used to determine the elemental composition of the materials. Gcvd was characterized by X-ray photoelectron spectroscopy. Elemental analysis showed different oxygen contents in the structures of the materials. Sensors with a small flake structure, i.e., rGO and Gnp, showed the highest change in resistance as a function of temperature. The temperature coefficient of resistance was 5.16−3·K−1 for Gnp and 4.86−3·K−1 for rGO. These values exceed that for a standard platinum thermistor. The Gpl and Gcvd sensors showed the least dependence on relative humidity, which is attributable to the number of oxygen groups in their structures.en
dc.format13 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citationŠTULÍK, J. MUSIL, O. JOSEFÍK, F. KADLEC, P. Graphene-based temperature sensors–comparison of the temperature and humidity dependences. Nanomaterials, 2022, roč. 12, č. 9, s. 1-13. ISSN: 2079-4991cs
dc.identifier.document-number794468800001
dc.identifier.doi10.3390/nano12091594
dc.identifier.issn2079-4991
dc.identifier.obd43936196
dc.identifier.uri2-s2.0-85129489393
dc.identifier.urihttp://hdl.handle.net/11025/49003
dc.language.isoenen
dc.project.IDEF16_026/0008382/Uhlíkové alotropy s racionalizovanými nanorozhraními a nanospoji pro environmentální a biomedicínské aplikacecs
dc.project.IDGA20-03913S/Organické senzory plynů - nové struktury, jejich vlastnosti a funkcecs
dc.publisherMDPIen
dc.relation.ispartofseriesNanomaterialsen
dc.rights© authorsen
dc.rights.accessopenAccessen
dc.subject.translatedgrapheneen
dc.subject.translatedtemperature sensoren
dc.subject.translatedhumidity dependenceen
dc.subject.translatedgraphene production methodsen
dc.titleGraphene-based temperature sensors–comparison of the temperature and humidity dependencesen
dc.typečlánekcs
dc.typearticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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