Synthesis of near unity photoluminescence CdSeTe alloyed Quantum Dots

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dc.contributor.authorElibol, Erdem
dc.date.accessioned2021-12-01T18:47:23Z
dc.date.available2021-12-01T18:47:23Z
dc.date.issued2020
dc.department[Belirlenecek]en_US
dc.description.abstractQuantum dots (QD) tend to exhibit low photoluminescence (PL) properties due to long hanging ligands on their surface and steric barriers resulting therefrom. On the other hand, in order to be used in QD LED and QDSSC technologies, highly intense PL characteristics and PL lifetime are required respectively. Therefore, this study focuses on increasing the PL QY and PL lifetime of CdSeTe alloy QDs. To achieve this aim, CdSeTe alloy QDs synthesized by organometallic method were treated with different mass % (m/m) chloride solution. The PL Quantum Yield (PL QY) of CdSeTe alloy QDs, which was 13.2 +/- 2.0% before treatment, increased to 97.4 +/- 2.0% after treatment with 60% CdCl2 solution approaching to almost unity value. In addition to the increase in PL QY, PL lifetime increased from 28 ns to 33 ns with chloride treatment. However, thanks to surface passivation, the time to fall to half the value of PL QY for treated CdSeTe(CI) QDs under oxygen exposure was increased from 10 h to 64 h. In the study, the absorbance and emission characterizations of CdSeTe alloy QDs treated with chloride and untreated, were presented. (C) 2019 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [217M897]en_US
dc.description.sponsorshipThis study was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK), project number 217M897.en_US
dc.identifier.doi10.1016/j.jallcom.2019.152726
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-85074441769en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2019.152726
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10255
dc.identifier.volume817en_US
dc.identifier.wosWOS:000506166400157en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorElibol, Erdem
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Alloys And Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCdSeTeen_US
dc.subjectPhoto luminescenceen_US
dc.subjectQuantum yielden_US
dc.subjectChloride treatmenten_US
dc.subjectQuantum doten_US
dc.subjectMultiple Exciton Generationen_US
dc.subjectSensitized Solar-Cellsen_US
dc.subjectElectronic-Structureen_US
dc.subjectLigand-Exchangeen_US
dc.subjectNanocrystalsen_US
dc.subjectPbseen_US
dc.subjectLuminescenceen_US
dc.subjectEfficiencyen_US
dc.subjectYielden_US
dc.subjectFluorescenceen_US
dc.titleSynthesis of near unity photoluminescence CdSeTe alloyed Quantum Dotsen_US
dc.typeArticleen_US

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