Optical performance and luminescence properties of Dy3+-doped LaMgB5O10 phosphors

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dc.authoridAydin, Hasan/0000-0003-1622-2436
dc.contributor.authorHakami, Jabir
dc.contributor.authorKaynar, U. H.
dc.contributor.authorCoban, M. B.
dc.contributor.authorAydin, H.
dc.contributor.authorAlamri, R.
dc.contributor.authorJabali, D. A.
dc.contributor.authorCan, N.
dc.date.accessioned2025-03-20T09:51:09Z
dc.date.available2025-03-20T09:51:09Z
dc.date.issued2025
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractDespite significant advancements in borate-based phosphors, improving luminescent efficiency and thermal stability, particularly at high temperatures, remains a persistent challenge. In this study, Dy3+-doped LaMgB5O10 (LMBO) phosphors were synthesized and characterized for their photoluminescent properties to address these issues. Under 344 nm excitation, the Dy3+-activated LMBO phosphors exhibited strong luminescence with characteristic peaks at 482 nm (blue), 578 nm (yellow), and 663 nm (red), corresponding to specific Dy3+ transitions. Optimal luminescence was achieved at a doping level of 2 wt% Dy3+, beyond which quenching effects reduced emission intensity. The critical quenching distance (Rc) was estimated at 24.66 & Aring;, indicating predominant non-radiative energy transfer. Moreover, thermal quenching was reduced, with the activation energy for thermal quenching determined to be 0.1975 eV, demonstrating that the material can maintain reasonable luminescence efficiency at elevated temperatures. Time-resolved photoluminescence spectroscopy revealed multi-exponential decay behavior, indicating the presence of multiple decay processes. The average luminescence lifetimes were calculated as 632 mu s for the 2 wt% Dy3+ sample and 539 mu s for the 3 wt% Dy3+ sample, with a clear concentration quenching effect observed at higher dopant levels. Colorimetric analysis in the CIE 1931 color space revealed a shift toward yellow with increasing Dy3+ concentration, achieving a correlated color temperature (CCT) of 6595 K at 2 wt% Dy3+. This shift supports the material's potential for photonic and lighting applications. These findings highlight a significant advancement in addressing the thermal stability issue in phosphor materials, making Dy3+-doped LMBO phosphors promising candidates for advanced photonic technologies.
dc.description.sponsorshipDeanship of Graduate Studies and Scientific Research, Jazan University, Saudi Arabia [RG24-M06]
dc.description.sponsorshipThe authors gratefully acknowledge the funding of the Deanship of Graduate Studies and Scientific Research, Jazan University, Saudi Arabia, through Project Number: RG24-M06.
dc.identifier.doi10.1016/j.inoche.2024.113540
dc.identifier.issn1387-7003
dc.identifier.issn1879-0259
dc.identifier.scopus2-s2.0-85208937960
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.inoche.2024.113540
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2448
dc.identifier.volume171
dc.identifier.wosWOS:001360236800001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofInorganic Chemistry Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250319
dc.subjectPhotoluminescence
dc.subjectConcentration quenching
dc.subjectActivation energy
dc.subjectCorrelated Color temperature (CCT)
dc.titleOptical performance and luminescence properties of Dy3+-doped LaMgB5O10 phosphors
dc.typeArticle

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