Bright white light emission from blue emitting carbon dot-coated Dy3+-doped luminescent glasses

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dc.contributor.authorÖzlem B.
dc.contributor.authorKorkmaz U.
dc.contributor.authorErol E.
dc.contributor.authorAlaş M.Ö.
dc.contributor.authorMeray Z.
dc.contributor.authorGenç Altürk R.
dc.contributor.authorÇelikbilek Ersundu M.
dc.contributor.authorErsundu A.E.
dc.date.accessioned2024-07-22T08:03:42Z
dc.date.available2024-07-22T08:03:42Z
dc.date.issued2022
dc.description.abstractDy3+-doped luminescent glasses have received great attention due to their ability to emit white light at a suitable yellow-to-blue intensity ratio. However, achieving bright white light using single Dy3+-doped glasses remains a challenge due to the hypersensitivity of the emission band at 575 nm — usually resulting in intense yellow emission. In this work, we present a novel approach for compensating for the blue emission deficiency of Dy3+ to produce resin-free white light-emitting diodes (WLEDs) by synthesizing two series of Dy3+-doped glasses from tellurite and silicate systems on which blue-emitting carbon dots (BCDs) are spin-coated. The structural, chemical, optical, and luminescence properties of tellurite and silicate glasses are compared and discussed in detail. White light emissions are obtained upon 365-nm excitation for BCD-coated Dy3+-doped tellurite and silicate glasses with color coordinates of (x = 0.31, y = 0.33) and (x = 0.31, y = 0.34) and correlated color temperatures (CCT) of 5518 K and 5316 K, respectively. BCDs coating increases photoluminescence quantum yield (PLQY) values from 3.10 % to 5.62 % and from 20.81 % to 31.49 % for tellurite and silicate glasses, respectively. Ultimately, the findings in this work show the potential of BCD-coated luminescent glasses with excellent luminescent properties to be considered in solid-state lighting applications. © 2022 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.jallcom.2022.166763
dc.identifier.issn09258388
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12388
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectCarbon
dc.subjectGlass
dc.subjectLight
dc.subjectLighting
dc.subjectLuminescence
dc.subjectTellurium compounds
dc.subjectBlue-emitting
dc.subjectCarbon dots
dc.subjectDoped glass
dc.subjectDy3+
dc.subjectLuminescent glass
dc.subjectSilicate glass
dc.subjectTellurite
dc.subjectTellurite glass
dc.subjectWhite light
dc.subjectWhite light emission
dc.subjectSilicates
dc.titleBright white light emission from blue emitting carbon dot-coated Dy3+-doped luminescent glasses
dc.typeArticle

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