Self-consistent computation of electronic and optical properties of a single exciton in a spherical quantum dot via matrix diagonalization method

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dc.contributor.authorSahin, Mehmet
dc.contributor.authorNizamoglu, Sedat
dc.contributor.authorKavruk, A. Emre
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2020-03-26T17:40:06Z
dc.date.available2020-03-26T17:40:06Z
dc.date.issued2009
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn this study, we develop and demonstrate an efficient self-consistent calculation schema that computes the electronic structure and optical properties of a single exciton in a spherical quantum dot (QD) with an interacting pair of electron and hole wave functions. To observe modifications on bands, wave functions, and energies due to the attractive Coulomb potential, the full numeric matrix diagonalization technique is employed to determine sublevel energy eigenvalues and their wave functions in effective mass approximation. This treatment allows to observe that the conduction and valance band edges bend, that the electron and hole wave functions strongly localize in the QD, and that the excitonic energy level exhibits redshift. In our approach for the Coulomb term between electron and hole, the Poisson-Schrodinger equations are solved self-consistently in the Hartree approximation. Subsequently, exciton binding energies and associated optical properties are computed. The results are presented as a function of QD radii and photon energies. We conclude that all of these numerical results are in agreement with the experimental studies. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3197034]en_US
dc.description.sponsorshipSelcuk University BAP officeSelcuk University; ESF-EURYIEuropean Science Foundation (ESF); TUBITAK EEEAGTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [106E020, 107E088, 107E297, 109E002]; TUBA-GEBIRTurkish Academy of Sciencesen_US
dc.description.sponsorshipThis work is partially supported by Selcuk University BAP office. This work is in part supported by ESF-EURYI, TUBITAK EEEAG Grant Nos. 106E020, 107E088, 107E297, and 109E002 and TUBA-GEBIRen_US
dc.identifier.doi10.1063/1.3197034en_US
dc.identifier.issn0021-8979en_US
dc.identifier.issn1089-7550en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://dx.doi.org/10.1063/1.3197034
dc.identifier.urihttps://hdl.handle.net/20.500.12395/23845
dc.identifier.volume106en_US
dc.identifier.wosWOS:000270083800045en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAMER INST PHYSICSen_US
dc.relation.ispartofJOURNAL OF APPLIED PHYSICSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleSelf-consistent computation of electronic and optical properties of a single exciton in a spherical quantum dot via matrix diagonalization methoden_US
dc.typeArticleen_US

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