Robust CsPbBr3 and CdSe / Dy3++CdSe quantum dot doped glass nanocomposite hybrid coupling as color converter for solid-state lighting applications

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dc.contributor.authorKıbrıslı O.
dc.contributor.authorErol E.
dc.contributor.authorÇelikbilek Ersundu M.
dc.contributor.authorErsundu A.E.
dc.date.accessioned2024-07-22T08:05:46Z
dc.date.available2024-07-22T08:05:46Z
dc.date.issued2021
dc.description.abstractCsPbX3 (X = Br-, Cl-, I-) and IIB-VIA group quantum dots (QDs) exhibit great potential for diverse opto-electronic applications due to their outstanding photoluminescence features. However, poor long-term stability limits their integration into practical applications. Although various surface modification and encapsulation methods have been proposed to increase their durability, desired stability values along with favorable emission properties could not be achieved yet. In this work, controlled crystallization of CsPbBr3 and CdSe QDs are realized separately in a specially tailored silicate glass matrix to obtain quantum dot doped glass nanocomposite (GNC) layers showing typical bright green emission and broadband emission that covers red end of the visible spectrum, respectively. Two alternative white LED devices are constructed as a proof-of-concept by coupling CsPbBr3 doped layer with CdSe and Dy3++CdSe doped layers on top of a blue LED chip to demonstrate excellent color conversion performance and challenging color rendering index values up to 85. CsPbBr3 doped GNC layer exhibits photoluminescence quantum yield (PLQY) up to 40.44%, while PLQY of CdSe doped layer is enhanced up to 18.68% via incorporation of Dy3+ ions. PL properties of GNCs are reversible up to 275 °C and stable after 60 days of immersion in water or under 442 nm laser irradiation (5 W/cm2) up to 30 min. Promising thermal, chemical, and photo stability properties reveal that hybrid coupling of GNCs exhibit high potential to be used as color convertors in solid-state lighting applications. © 2021 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.cej.2021.130542
dc.identifier.issn13858947
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13257
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.subjectBromine compounds
dc.subjectCadmium compounds
dc.subjectColor
dc.subjectDysprosium compounds
dc.subjectGlass
dc.subjectII-VI semiconductors
dc.subjectLead compounds
dc.subjectLight emitting diodes
dc.subjectNanocomposites
dc.subjectPhotoluminescence
dc.subjectSelenium compounds
dc.subjectSemiconductor quantum dots
dc.subjectSilicates
dc.subjectCdse
dc.subjectCdSe quantum dots
dc.subjectDoped glass
dc.subjectDoped layers
dc.subjectGlass nano-composites
dc.subjectGlass-nanocomposites
dc.subjectHybrid couplings
dc.subjectSolid-state lighting application
dc.subjectWavelength convertors
dc.subjectWhite LED's
dc.subjectNanocrystals
dc.titleRobust CsPbBr3 and CdSe / Dy3++CdSe quantum dot doped glass nanocomposite hybrid coupling as color converter for solid-state lighting applications
dc.typeArticle

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