Enhancement of luminescence and thermal stability in Eu3+-doped K3Y (BO2)6 with Li+ and Na+ co-doping

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dc.authoridAYVACIKLI, Mehmet/0000-0002-7278-046X
dc.authoridCan, Nurdogan/0000-0001-9576-7869
dc.authoridCoban, Mustafa Burak/0000-0003-3488-5284
dc.authoridAydin, Hasan/0000-0003-1622-2436
dc.contributor.authorKaynar, U. H.
dc.contributor.authorAydin, H.
dc.contributor.authorAltowyan, A. S.
dc.contributor.authorHakami, J.
dc.contributor.authorCoban, M. B.
dc.contributor.authorAyvacikli, M.
dc.contributor.authorKarali, E. Ekdal
dc.date.accessioned2025-03-20T09:51:11Z
dc.date.available2025-03-20T09:51:11Z
dc.date.issued2024
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractEu3+-doped and Li+/Na+ co-doped K3Y(BO2)6 (KYBO) phosphors were synthesized through a microwave- assisted sol-gel method, and their structural and photoluminescent (PL) characteristics were examined. X-ray diffraction (XRD) and Rietveld refinement confirm effective dopant incorporation and preservation of the crystalline structure. Fourier Transform Infrared (FTIR) spectroscopy indicates the maintenance of the borate structure, confirming the structural integrity of the phosphors upon doping. The addition of Li+ and Na+ co-dopants notably enhances luminescent efficiency and thermal stability, making these phosphors promising candidates for solid-state lighting (SSL) applications. PL analysis reveals strong red emission peaks at 612 nm, attributed to the 5 D o ? 7 F 2 transition of Eu3+ ions. The study indicates that electric dipole-quadrupole interactions are the primary mechanism for energy migration, with a critical distance of approximately 22.68 & Aring;. This mechanism contributes to concentration quenching at higher doping levels. High temperature PL measurements indicated an activation energy of 0.1389 eV for thermal quenching in the Li+ co-doped sample. Additionally, the Na+ co-doped sample exhibited an abnormal thermal stability behavior, with an even higher activation energy of 0.2536 eV. This suggests that Na+ co-doping significantly enhances the thermal resilience of the phosphor, making it more suitable for high-power light-emitting applications that operate under extreme conditions. CIE chromaticity diagrams highlight the potential for optimizing Eu3+ doping levels, combined with Li+ and Na+ co-doping, to improve luminescent performance and thermal stability for advanced SSL applications. (c) 2024 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
dc.description.sponsorshipPrincess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia [PNURSP2024R16]; Turkish Scientific Research Council [223M036, TUBITAK-1001]; Scientific and Technological Research Council of Turkey (TUBITAK) [2221]
dc.description.sponsorshipWe express our gratitude to the Princess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2024R16) , Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia. This study was supported by the Turkish Scientific Research Council with the project numbered 223M036 within the scope of theTUBITAK-1001 project. The authors also extend their sincere gratitude for the support rendered to this study by the Scientific and Technological Research Council of Turkey (TUBITAK) through the 2221-Fellowships for Visiting Scientists and Scientists on Sabbatical Leave Programme.
dc.identifier.doi10.1016/j.apt.2024.104695
dc.identifier.issn0921-8831
dc.identifier.issn1568-5527
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85206464791
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.apt.2024.104695
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2463
dc.identifier.volume35
dc.identifier.wosWOS:001339662800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofAdvanced Powder Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250319
dc.subjectK3Y(BO2)(6) phosphors
dc.subjectPhotoluminescence
dc.subjectThermal stability
dc.subjectEnergy migration
dc.subjectConcentration quenching
dc.titleEnhancement of luminescence and thermal stability in Eu3+-doped K3Y (BO2)6 with Li+ and Na+ co-doping
dc.typeArticle

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