ITO/MgSe interfaces designed as gigahertz/terahertz filters

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dc.authoridAtef Fayez Qasrawi / 0000-0001-8193-6975en_US
dc.authorscopusidAtef Fayez Qasrawi / 6603962677en_US
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019en_US
dc.contributor.authorAlmotiri, R. A.
dc.contributor.authorQasrawi, A. F.
dc.date.accessioned2023-04-03T13:03:55Z
dc.date.available2023-04-03T13:03:55Z
dc.date.issued2023en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractHerein a new class of MgSe gigahertz/terahertz band filters operatives in the frequency domain of 1.0 GHz-1.86 THz is fabricated and experimentally tested. MgSe band filters are coated onto glass and indium tin oxide (ITO) substrates by the thermal evaporation technique under a vacuum pressure of 10-5 mbar. Thin films of MgSe are structurally, morphologically, compositionally, optically and electrically characterized. It is observed that ITO substrates induce the growth of monophasic of MgSe, enhances the crystallinity of the films and blueshifts the energy band gaps of MgSe. Practical applications were verified by impedance spectroscopy technique through imposing an ac signal of driving frequency in the domain of 10.0 MHz-1.8 GHz between the terminals of ITO/MgSe/Au (IMA) devices. It is observed that the IMA devices exhibit negative capacitance effect. Analysis of the cutoff frequency spectra has shown that IMA devices can reveal wide range of tunability in the gigahertz frequency domain. In addition, the cutoff frequency spectra show values reaching ~1.86 THz for signals of driving frequencies of ~1.0 GHz. Evaluation of the magnitude of the reflection coefficient spectra and return loss spectra for these devices show that the IMA devices can perform as bandstop filters with return loss values exceeding 20 dB at 1.0 GHz. The features of the ITO/MgSe/Au devices are appropriate for the 5G/6G technology needs indicating that the device can be employed in communication technology and other gigahertz/terahertz applications.en_US
dc.identifier.citationAlmotiri, R. A., & Qasrawi, A. F. (2023). ITO/MgSe interfaces designed as gigahertz/terahertz filters. Physica Scripta, 98(4) doi:10.1088/1402-4896/acbb3aen_US
dc.identifier.doi10.1088/1402-4896/acbb3aen_US
dc.identifier.issn0031-8949en_US
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85149858402en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage045806en_US
dc.identifier.urihttps://doi.org/10.1088/1402-4896/acbb3a
dc.identifier.urihttps://hdl.handle.net/20.500.12713/3890
dc.identifier.volume98en_US
dc.identifier.wosWOS:000943829400001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherIOP Scienceen_US
dc.relation.ispartofPhysica Scriptaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectITO/MgSeen_US
dc.subjectThermal Evaporationen_US
dc.subjectGigahertz/Terahertzen_US
dc.subjectBandstop Filtersen_US
dc.titleITO/MgSe interfaces designed as gigahertz/terahertz filtersen_US
dc.typeArticleen_US

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