Enhanced Performance of Fe/WO3 Terahertz Dielectric Lenses

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dc.authoridhttps://orcid.org/0000-0001-8193-6975en_US
dc.authorscopusid6603962677en_US
dc.authorwosidR-4409-2019en_US
dc.contributor.authorQasrawi Atef Fayez
dc.contributor.authorHazem Khanfar
dc.date.accessioned2025-04-18T10:36:38Z
dc.date.available2025-04-18T10:36:38Z
dc.date.issuedNisan 2024en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractHerein transparent iron nanosheets deposited by the ionic coating technique onto glass and WO3 dielectric lenses are studied and characterized. The thickness of Fe nanosheets is varied in the range of 70–350 nm. It is observed that the transmittance and reflectance of the Fe nanosheets are highly affected by the layer roughness. Coating of iron nanosheets onto WO3 dielectric lenses increases the light absorption of WO3 by more than 240 times and red-shifts the energy bandgap. Remarkable enhancements in the dielectric constant and in the optical conductivity are achieved via Fe coatings. In addition, iron coated dielectric lenses show higher terahertz cutoff limits varying in the range of 1.0–30 THz. Iron nanosheets remarkably increase the free charge carrier density and plasmon frequency in the infrared range of light. Moreover, the temperature dependent electrical conductivity shows high temperature stability and an increased electrical conductivity by more than 7 orders of magnitude by coating WO3 with 70 nm thick Fe nanosheets. The stability of the electrical conductivity at low temperatures and the wide range of terahertz cutoff limits in addition to the well-enhanced light absorbability makes the iron coated tungsten oxide dielectric lenses promising for multifunction optoelectronic applications.en_US
dc.identifier.citationCryst. Res. Technol.2024, 2300331en_US
dc.identifier.startpage2300331en_US
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1002/crat.202300331
dc.identifier.urihttps://hdl.handle.net/20.500.12713/7143
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoengen_US
dc.publisherCrystal Research and Technology, Wileyen_US
dc.relation.isversionofhttps://onlinelibrary.wiley.com/doi/10.1002/crat.202300331en_US
dc.relation.journalCrystal Research and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectdielectric lenses, Fe nanosheets, plasmon, terahertz filters, WO3en_US
dc.titleEnhanced Performance of Fe/WO3 Terahertz Dielectric Lensesen_US
dc.typearticleen_US

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