Effect of transparent Pb substrates on the structural, optical, dielectric and electrical properties of copper selenide thin films

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dc.authoridAtef Fayez Qasrawi / 0000-0001-8193-6975en_US
dc.authorscopusidAtef Fayez Qasrawi / 6603962677
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019
dc.contributor.authorQasrawi, Atef Fayez
dc.contributor.authorAbu Ghannam, A. N.
dc.date.accessioned2022-03-16T05:31:58Z
dc.date.available2022-03-16T05:31:58Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.description.abstractHerein, copper selenide thin films are coated onto transparent lead substrates. Pb/CuSe stacked layers is fabricated by the thermal evaporation technique under a vacuum pressure of 10-5 mbar. They are structurally, morphologically, optically and electrically characterized. Lead substrates enhanced the crystallinity of CuSe through increasing the crystallite sizes, reducing the microstrain and lowering defect densities. In addition, a blue shift in the energy band gap associated with remarkable increase in the value of the high frequency dielectric constant resulted from replacement of glass by Pb substrates. Moreover, significant increase in the optical conductivity in the ultraviolet range of light is observed. Fitting the optical conductivity in accordance with Drude- Lorentz models allowed determining the effect of transparent Pb substrates on the plasmon frequency, scattering time at femtosecond level and drift mobility of CuSe. On the other hand, electrical measurements on the Pb/CuSe/C by imposing an ac signal of low amplitude in the frequency domain of 10-1000 MHz, have shown that the Pb/CuSe can perform as negative capacitance source employable for devices scaling and low power applications.en_US
dc.identifier.citationQasrawi, A. F., Abu Ghannam, A. (2022). N.Effect of transparent Pb substrates on the structural, optical, dielectric and electrical properties of copper selenide thin films. Chalcogenide Letters, 19(3), 163-172.en_US
dc.identifier.endpage172en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage163en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12713/2554
dc.identifier.volume19en_US
dc.identifier.wosWOS:000771572800001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherForum of Chalcogenidersen_US
dc.relation.ispartofChalcogenide Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPb/CuSe Interfacesen_US
dc.subjectX-ray Diffractionen_US
dc.subjectOptical Conductionsen_US
dc.subjectNegative Capacitanceen_US
dc.titleEffect of transparent Pb substrates on the structural, optical, dielectric and electrical properties of copper selenide thin filmsen_US
dc.typeArticleen_US

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