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.authorAlai, MÖ
dc.contributor.authorMeray, Z
dc.contributor.authorAltürk, RG
dc.contributor.authorErsundu, MC
dc.contributor.authorErsundu, AE
dc.date.accessioned2024-07-18T12:03:34Z
dc.date.available2024-07-18T12:03:34Z
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. (c) 2022 Elsevier B.V. All rights reserved.
dc.identifier.issn0925-8388
dc.identifier.other1873-4669
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/9208
dc.language.isoEnglish
dc.publisherELSEVIER SCIENCE SA
dc.subjectSILICATE GLASS
dc.subjectLASER
dc.subjectEU3+
dc.titleBright white light emission from blue emitting carbon dot-coated Dy3+- doped luminescent glasses
dc.typeArticle

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