Au nanosheets-assisted structural phase transitions, in situ monitoring of the enhanced crystallinity, and their effect on the optical and dielectric properties of CuSe/Au/CuSe 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.authorBaniowdah, Tahani S.
dc.contributor.authorSamen, Lara O. Abu
dc.date.accessioned2022-02-02T13:26:25Z
dc.date.available2022-02-02T13:26:25Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.description.abstractHerein, stacked layers of copper selenide thin films comprising Au nanosheets in its structure are fabricated and characterized. The CuSe/Au/CuSe (CAC) thin films are prepared by the thermal evaporation technique under a vacuum pressure of 10?5 mbar. It is shown that Au nanosheets improve the stoichiometric growth of the CuSe thin films and induce the structural phase transitions from cubic to hexagonal. In addition, the in situ monitoring of the structural modifications in the CAC in the temperature range of 293–473 K proves the permanent enhanced crystallinity of the films. Optically, while the Au nanosheets increase the light absorbability and redshifts the energy band gap of CuSe, the in situ heating blueshifts the energy band gap. Moreover, insertion of Au nanosheets between layers of CuSe and heating them at 473 K significantly increase the dielectric constant and the optical conductivity by more than five times. Moreover, the drift mobility of charged carriers, the scattering time at femtosecond level, and the plasmon frequency are remarkably enhanced. Values of plasmon frequency exceed 6.0 GHz nominating the CAC films as signal receivers suitable for 5G technology.en_US
dc.identifier.citationQasrawi, A. F., Baniowdah, T. S., Abu, L. O., Au Nanosheets-Assisted Structural Phase Transitions, In Situ Monitoring of the Enhanced Crystallinity, and Their Effect on the Optical and Dielectric Properties of CuSe/Au/CuSe Thin Films. Crystal Research and Technology 2022, 2100237en_US
dc.identifier.doi10.1002/crat.202100237en_US
dc.identifier.issn1521-4079en_US
dc.identifier.scopus2-s2.0-85123920286en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.urihttps://doi.org/10.1002/crat.202100237
dc.identifier.urihttps://hdl.handle.net/20.500.12713/2456
dc.identifier.wosWOS:000748850000001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofCrystal Research and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleAu nanosheets-assisted structural phase transitions, in situ monitoring of the enhanced crystallinity, and their effect on the optical and dielectric properties of CuSe/Au/CuSe thin filmsen_US
dc.typeArticleen_US

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