The effects of temperature and pressure on the optical properties of a donor impurity in (In, Ga)N/GaN multilayer cylindrical dots

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dc.contributor.authorJaouane, M.
dc.contributor.authorSali, A.
dc.contributor.authorFakkahi, A.
dc.contributor.authorArraoui, R.
dc.contributor.authorUngan, F.
dc.date.accessioned2024-10-26T18:07:43Z
dc.date.available2024-10-26T18:07:43Z
dc.date.issued2022
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractThis paper examines the variation of the linear, third-order nonlinear and total intersubband optical absorption (refractive index changes) coefficients of a donor impurity in multilayer cylindrical quantum dots (MCQDs), under the effect of temperature T and hydrostatic pressure P. Moreover, in this study, we also examined the effect of structure parameters on the optical absorption coefficients of the system. The Schrodinger equation describing the system is solved numerically by the finite element method (FEM) within the effective mass approximation. In our calculations, the confinement potential is modeled by a parabolic form in the radial direction and a square one in the z-direction. The optical absorption coefficients and refractive index changes have been investigated versus the quantum dot radius, indium composition and intensity of the incident electromagnetic for three allowed transitions: 1s - 1p, 2s - 1p and 1p - 1d. Our essential outcomes exhibit that the optical absorption coefficients and refractive index changes are strongly sensitive to the variation of quantum dot sizes, which enhance and blueshift as the quantum confinement is strong. On the contrary, the optical absorption coefficients and refractive index changes diminish and redshift as the quantum confinement reduces.
dc.description.sponsorshipNational Centre for Scientific and Technical Research (NCSTR) in Morocco
dc.description.sponsorshipThis work is supported by the National Centre for Scientific and Technical Research (NCSTR) in Morocco. We would like to thank also Jorgen S. Dokken, a Research Assistant at University of Cambridge for his useful help.
dc.identifier.doi10.1016/j.spmi.2021.107146
dc.identifier.issn2773-0123
dc.identifier.scopus2-s2.0-85123062911
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://doi.org/10.1016/j.spmi.2021.107146
dc.identifier.urihttps://hdl.handle.net/20.500.12418/29656
dc.identifier.volume163
dc.identifier.wosWOS:000835529300012
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAcademic Press Ltd- Elsevier Science Ltd
dc.relation.ispartofMicro and Nanostructures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectIntersubband optical absorption
dc.subjectRefractive index changes
dc.subjectQuantum confinement
dc.subjectFEM
dc.subjectDonor impurity
dc.subjectSubband energy differences
dc.titleThe effects of temperature and pressure on the optical properties of a donor impurity in (In, Ga)N/GaN multilayer cylindrical dots
dc.typeArticle

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