Enhanced structural, optical and dielectric properties of the Se/CdBr2 interfaces designed as terahertz optical receivers

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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.authorImair, Salsabeel N. N.
dc.date.accessioned2022-09-19T08:08:34Z
dc.date.available2022-09-19T08:08:34Z
dc.date.issued2022en_US
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Bölümüen_US
dc.description.abstractHerein monoclinic selenium thin films are used as substrates to grow hexagonal cadmium bromide thin films. It is found that selenium substrates enhance the growth of larger crystallites and reduces the microstrain and defect density in CdBr2. The conduction and valance band offsets of the Se/CdBr2 interfaces are found to be 1.25 eV and 0.54 eV, respectively. With these band offset values the light absorbability of CdBr2 in the visible range of light are remarkably increased. In addition, interfacing of Se with CdBr2 significantly increased the real part of dielectric constant and forced dielectric resonance in the infrared and visible ranges of light. Moreover, the optical conductivity parameters including the drift mobility, the scattering time at femtosecond level and the plasmon frequency for Se/ CdBr2 is optimized using Drude-Lorentz approach. It found that coating CdBr2 onto Se result in enhancement of the drift mobility and plasmon frequency values allowing them reaching ~ 44 cm2/ Vs and 0.77 GHz and 22 cm2/ Vs and 5.69 GHz, when exposed to infrared and ultraviolet radiation, respectively. It is also observed that Se/CdBr2 optical receivers can perform as terahertz band filters showing constant cutoff frequency values of 3.0 THz and 15.0 THz in the infrared and visible ranges of light, respectively.en_US
dc.identifier.citationQasrawi, A. F., Imair, S. N. N. (2022). Enhanced structural, optical and dielectric properties of the Se/CdBr2 interfaces designed as terahertz optical receivers. Optical and Quantum Electronics, 54.en_US
dc.identifier.doi10.1007/s11082-022-04146-0en_US
dc.identifier.scopus2-s2.0-85138141935en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1007/s11082-022-04146-0
dc.identifier.urihttps://hdl.handle.net/20.500.12713/3151
dc.identifier.volume54en_US
dc.identifier.wosWOS:000854650000007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorQasrawi, Atef Fayez
dc.language.isoenen_US
dc.publisherSpringer Linken_US
dc.relation.ispartofOptical and Quantum Electronicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSe/CdBr2en_US
dc.subjectX-rayen_US
dc.subjectBand Offseten_US
dc.subjectDielectricen_US
dc.subjectOptical Receiveren_US
dc.subjectTHzen_US
dc.titleEnhanced structural, optical and dielectric properties of the Se/CdBr2 interfaces designed as terahertz optical receiversen_US
dc.typeArticleen_US

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