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dc.contributor.authorQasrawi, Atef Fayez
dc.date.accessioned2022-06-23T06:06:14Z
dc.date.available2022-06-23T06:06:14Z
dc.date.issued2022en_US
dc.identifier.citationA.F. Qasrawi, Plasmonic interactions at the Pb/SeO2 interfaces designed as terahertz/gigahertz optical receivers, Optik, 2022, 169529, ISSN 0030-4026, https://doi.org/10.1016/j.ijleo.2022.169529, (https://www.sciencedirect.com/science/article/pii/S0030402622008385)en_US
dc.identifier.issn0030-4026
dc.identifier.urihttp://doi.org/10.1016/j.ijleo.2022.169529
dc.identifier.urihttps://hdl.handle.net/20.500.12713/2929
dc.descriptionNote: Low-resolution images were used to create this PDF. The original images will be used in the final composition.en_US
dc.descriptionNote: Low-resolution images were used to create this PDF. The original images will be used in the final composition.en_US
dc.description.abstractHerein semitransparent lead substrates of thicknesses of 200 nm are employed as plasmonic interfaces to enhance the optoelectronic performance of SeO2 thin films. Pb/SeO2 interfaces are fabricated by the physical vapor deposition technique under a vacuum pressure of 10-5 mbar. The structural analyses showed that Pb substrates can induce the evolution of tetragonal phase of selenium oxide. The phase comprises 1.27% cubic PbSe in its structure. Surface morphology studies show that Pb substrates prefer formation of grains of sizes of 250 nm resulting from the accumulation of lead crystallites of sizes of 37 nm. Optically, Pb substrates increased the light absorbability in the visible range of light without altering the value of the energy band gap, improved the dielectric response by 4% at 1.15 eV and by 40% at 1.87 eV. In addition, Durde-Lorentz modeling of the optical conductivity spectra of SeO2 has shown that Pb plasmonic resonators increase the plasmon frequency and free carrier density of Pb/SeO2 interfaces allowing it reaching 5 G/6 G technology needs. Moreover, evaluation of the terahertz cutoff frequency spectra indicated the applicability of the Pb/SeO2 as optical receivers responsive to infrared, visible and ultraviolet bands of light at terahertz cutoff frequency values of 17-160 THz. Furthermore, the capacitance and conductance spectral studies in the frequency domain of 0.01-1.80 GHz indicated the suitability of Pb/SeO2/C devices as negative conductance sources beneficial for signal amplification in the microwave frequency domain.en_US
dc.description.abstractHerein semitransparent lead substrates of thicknesses of 200 nm are employed as plasmonic interfaces to enhance the optoelectronic performance of SeO2 thin films. Pb/SeO2 interfaces are fabricated by the physical vapor deposition technique under a vacuum pressure of 10-5 mbar. The structural analyses showed that Pb substrates can induce the evolution of tetragonal phase of selenium oxide. The phase comprises 1.27% cubic PbSe in its structure. Surface morphology studies show that Pb substrates prefer formation of grains of sizes of 250 nm resulting from the accumulation of lead crystallites of sizes of 37 nm. Optically, Pb substrates increased the light absorbability in the visible range of light without altering the value of the energy band gap, improved the dielectric response by 4% at 1.15 eV and by 40% at 1.87 eV. In addition, Durde-Lorentz modeling of the optical conductivity spectra of SeO2 has shown that Pb plasmonic resonators increase the plasmon frequency and free carrier density of Pb/SeO2 interfaces allowing it reaching 5 G/6 G technology needs. Moreover, evaluation of the terahertz cutoff frequency spectra indicated the applicability of the Pb/SeO2 as optical receivers responsive to infrared, visible and ultraviolet bands of light at terahertz cutoff frequency values of 17-160 THz. Furthermore, the capacitance and conductance spectral studies in the frequency domain of 0.01-1.80 GHz indicated the suitability of Pb/SeO2/C devices as negative conductance sources beneficial for signal amplification in the microwave frequency domain.en_US
dc.language.isoengen_US
dc.publisherElsevier Scienceen_US
dc.relation.isversionof10.1016/j.ijleo.2022.169529en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPb/SeO2en_US
dc.subjectSemitransparent Conductive Substratesen_US
dc.subjectTerahertzen_US
dc.subjectPlasmonen_US
dc.subjectNegative Conductanceen_US
dc.titlePlasmonic interactions at the Pb/SeO2 interfaces designed as terahertz/gigahertz optical receiversen_US
dc.typearticleen_US
dc.contributor.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.contributor.authorID0000-0001-8193-6975en_US
dc.contributor.institutionauthorQasrawi, Atef Fayez
dc.relation.journalOptik - International Journal for Light and Electron Opticsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.wosauthoridR-4409-2019en_US
dc.description.scopuspublicationidS0030402622008385en_US


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