Stacked layers of Nb2O5/Pt/Nb2O5 designed as conducting oxides, terahertz band filters, and semitransparent light absorbers

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dc.authorscopusidAtef Fayez Qasrawi / 6603962677
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019
dc.contributor.authorGaabour, Laila H.
dc.contributor.authorQasrawi, Atef Fayez
dc.contributor.authorAlharbi, Seham R.
dc.date.accessioned2025-04-18T09:22:03Z
dc.date.available2025-04-18T09:22:03Z
dc.date.issued2024
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü
dc.description.abstractHerein, stacked layers of Nb2O5 structured with platinum nanosheets were fabricated to handle multifunctional electro-optic operations. The stacked layers of Nb2O5/Pt/Nb2O5 (NPN) were prepared by the ion coating technique and exhibited an amorphous structure. A remarkable increase in light absorption by more than 480% was achieved via the insertion of Pt nanosheets between layers of Nb2O5. Pt nanosheets with thicknesses of 50 nm and 100 nm successfully increased the electrical conductivity of the NPN layers by five and eight orders of magnitude, respectively, without losing transparency. This feature makes the NPN stacks suitable for transparent conducting oxide applications. The insertion of Pt nanosheets between layers of Nb2O5 also converted the conductivity from p- to n-type. In addition, NPN stacked layers exhibited highly enhanced dielectric properties, demonstrating an increase in the dielectric constant by 190%, making the NPN stacked layers suitable for use in the design of high-kappa gate dielectric devices. Moreover, when treated as optical filters, Drude-Lorentz fittings of the dielectric spectra showed that Pt nanosheets increased the free carrier density and the plasmon frequency. The terahertz cutoff frequency of the NPN devices steadily increased with increasing Pt nanosheet thickness. The terahertz cutoff frequency for NPN optical filters comprising a 100-nm-thick layer of Pt displayed values of 7.5 THz and 5.0 THz in the infrared and visible light ranges. The NPN stacks have potential for use in terahertz applications.
dc.description.sponsorshipUniversity of Jeddah
dc.identifier.citationGaabour, L. H., Qasrawi, A. F., & Alharbi, S. R. (2024). Stacked layers of Nb2O5/Pt/Nb2O5 designed as conducting oxides, terahertz band filters, and semitransparent light absorbers. Journal of Electronic Materials, 53(11), 7096-7107.
dc.identifier.doi10.1007/s11664-024-11354-9
dc.identifier.endpage7107
dc.identifier.issn03615235
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85201273828
dc.identifier.scopusqualityQ2
dc.identifier.startpage7096
dc.identifier.urihttp://dx.doi.org/10.1007/s11664-024-11354-9
dc.identifier.urihttps://hdl.handle.net/20.500.12713/6767
dc.identifier.volume53
dc.identifier.wosWOS:001289953500001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorQasrawi, Atef Fayez
dc.institutionauthoridAtef Fayez Qasrawi / 0000-0001-8193-6975
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of electronic materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectConducting Oxides
dc.subjectHigh-k Gate Dielectrics
dc.subjectLight Absorbers
dc.subjectNb2O5/Pt/Nb2O5
dc.subjectTerahertz
dc.titleStacked layers of Nb2O5/Pt/Nb2O5 designed as conducting oxides, terahertz band filters, and semitransparent light absorbers
dc.typeArticle

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