FUNCTIONAL TUNGSTEN-BASED THIN FILMS AND THEIR CHARACTERIZATION

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dc.contributor.authorKošelová, Zuzanacs
dc.contributor.authorHoráková, Lenkacs
dc.contributor.authorSobola, Dinaracs
dc.contributor.authorBurda, Danielcs
dc.contributor.authorKnápek, Alexandrcs
dc.contributor.authorFohlerová, Zdenkacs
dc.date.accessioned2025-06-20T04:56:56Z
dc.date.available2025-06-20T04:56:56Z
dc.date.issued2024-01-08cs
dc.description.abstractAnodization is a technique that can be used to create thin layers of oxide on the surface. Thin oxide layers have been found to be useful in a variety of applications, including emitters of electrons. Tungsten is still often choice for cold field emitters in commercial microscopy applications. His suitable quality can be improved even more by deposition of thin layer. Not only emission characteristic can be improved, but also emitter operating time can be prolonged. Tungsten oxide is known for its excellent resistance to corrosion and chemical attack, which is due to its stable crystal structure and the strong chemical bonds between tungsten and oxygen atoms. Many techniques were applied for this purpose, with various advantages and disadvantages. For this work anodization was chosen because of controllable uniform material coverage and easy accessibility without the need for expensive complex equipment. The anodization process involves applying an electrical potential to tungsten while it is immersed in an electrolyte solution. This causes a thin layer of tungsten oxide to form on the surface of the metal. The thickness and properties of the resulting oxide layer can be controlled by adjusting the anodization conditions, such as the electrolyte solution, voltage, and the duration of the process. In this work, H3PO4 was used as electrolyte To test whether these tungsten oxide layers would be viable for electron emitters, for use in electron guns and other devices that require high-quality electron emitters, we put them through a series of tests. Properties were evaluated using appropriate techniques. In general, anodization of tungsten to create thin tungsten oxide layers is a promising technique for producing high-quality electron emitters.en
dc.formattextcs
dc.format.extent473-479cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationConference Proceedings - METAL 2023. 2024, p. 473-479.en
dc.identifier.doi10.37904/metal.2023.4719cs
dc.identifier.isbn978-80-88365-12-9cs
dc.identifier.orcid0000-0002-1084-9935cs
dc.identifier.orcid0000-0002-0008-5265cs
dc.identifier.orcid0000-0003-0752-8214cs
dc.identifier.orcid0000-0002-1232-2301cs
dc.identifier.other185299cs
dc.identifier.researcheridG-1175-2019cs
dc.identifier.researcheridE-6640-2013cs
dc.identifier.researcheridA-6893-2013cs
dc.identifier.scopus57189064262cs
dc.identifier.scopus36544102200cs
dc.identifier.urihttps://hdl.handle.net/11012/254471
dc.language.isoencs
dc.publisherTANGER Ltdcs
dc.relation.ispartofConference Proceedings - METAL 2023cs
dc.relation.urihttps://www.confer.cz/metal/2023/4719-functional-tungsten-based-thin-films-and-their-characterizationcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectCold-field emissionen
dc.subjectthin layer depositionen
dc.subjecttungsten oxideen
dc.subjectresonance enhanced tunnelingen
dc.subjectanodizationen
dc.titleFUNCTIONAL TUNGSTEN-BASED THIN FILMS AND THEIR CHARACTERIZATIONen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-185299en
sync.item.dbtypeVAVen
sync.item.insts2025.06.20 06:56:56en
sync.item.modts2025.06.20 06:33:41en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav fyzikycs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav mikroelektronikycs
thesis.grantorVysoké učení technické v Brně. . Ústav přístrojové techniky AV ČRcs
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Centrum materiálového výzkumucs
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