Electro-optical dynamics in SnO2 designed as negative resistance sources and gigahertz/terahertz band filters

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dc.authorscopusidAtef Fayez Qasrawi / 6603962677
dc.authorwosidAtef Fayez Qasrawi / R-4409-2019
dc.contributor.authorKmail, Bayan H.
dc.contributor.authorQasrawi, Atef Fayez
dc.date.accessioned2025-04-18T10:38:21Z
dc.date.available2025-04-18T10:38:21Z
dc.date.issued2024
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü
dc.description.abstractAmorphous thin films of SnO2, prepared by a vacuum evaporation technique under a pressure of 10(- 5) mbar, are employed as electro-optical filters suitable for microwave, infrared, and visible light communication technologies. The filters perform as optical layers, exhibiting optical transitions within an energy band gap of 3.62 eV, with the band gap containing energy band tails of widths of 0.63 eV. In addition, dielectric dispersion analyses on the optical filters show their ideality for high k-gate dielectric applications. Wide tunability in the dielectric response is observed in these films. Moreover, analyses of the optical conductivity and terahertz cutoff frequency spectra have shown that SnO2 films exhibit resonance of optical signals suitable for infrared and visible light communication technology as well. When excited with infrared light of energy of 1.38 eV, the drift mobility and free hole concentration in these films reach 11.72 cm(2)/Vs and 2 x 10(17) cm(- 3), respectively. Furthermore, the device exhibits a negative resistance effect in the microwave range of 0.1-1.80 GHz, and terahertz cutoff frequency values in the range of 10 GHz - 48 THz. The features of the SnO2 electro-optical band filter make them attractive for communication technology extending from 5G/6G to IR and reaching visible light communications.
dc.identifier.citationQasrawi, A. F., & Kmail, B. H. (2024). Electro-optical dynamics in SnO2 designed as negative resistance sources and gigahertz/terahertz band filters. Optical and Quantum Electronics, 56(6), 978.
dc.identifier.doi10.1007/s11082-024-06794-w
dc.identifier.endpage13
dc.identifier.issn0306-8919
dc.identifier.issn1572-817X
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85192570526
dc.identifier.scopusqualityQ2
dc.identifier.startpage1
dc.identifier.urihttp://dx.doi.org/10.1007/s11082-024-06794-w
dc.identifier.urihttps://hdl.handle.net/20.500.12713/7156
dc.identifier.volume56
dc.identifier.wosWOS:001217721200016
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorQasrawi, Atef Fayez
dc.institutionauthoridAtef Fayez Qasrawi / 0000-0001-8193-6975
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofOptical and Quantum Electronics
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSnO2
dc.subjectTerahertz Band Filters
dc.subjectOptoelectronics
dc.subjectDielectric
dc.subjectIR Communication
dc.titleElectro-optical dynamics in SnO2 designed as negative resistance sources and gigahertz/terahertz band filters
dc.typeArticle

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