Structural and thermal insights into the luminescent behavior of Dy3+-Doped BaZrO3 with alkali metal codopants under UV radiation

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dc.contributor.authorArslanlar, Y. Tuncer
dc.contributor.authorAlajlani, Y.
dc.contributor.authorCoban, M. B.
dc.contributor.authorKaynar, U. H.
dc.contributor.authorAydin, H.
dc.contributor.authorOrucu, H.
dc.contributor.authorGuinea, J. Garcia
dc.date.accessioned2025-03-20T09:51:12Z
dc.date.available2025-03-20T09:51:12Z
dc.date.issued2025
dc.departmentİzmir Bakırçay Üniversitesi
dc.description.abstractThis study investigates the structural, thermal, and photoluminescent properties of Dy3+-doped BaZrO3 (BZO) perovskites, synthesized via a co-precipitation method, incorporating alkali metal codopants (Li+, Na+, and K+). Xray diffraction (XRD) analysis confirmed the retention of the cubic perovskite phase following doping, with Rietveld refinement further revealing minor lattice distortions due to Dy3+incorporation. The Williamson-Hall (W-H) analysis revealed average crystallite sizes of 53 nm and 66 nm for undoped and 0.01 Dy3+-doped BaZrO3, respectively, with corresponding micro-strain values of 1.79 x 10-3 and 1.81 x 10-3, suggesting lattice distortions due to incorporation of Dy3+. Fourier transform infrared (FTIR) spectroscopy confirmed the cubic perovskite structure and subtle structural modifications upon doping. Notably, the absence of moisture-related peaks highlights the effectiveness of the synthesis process, including rigorous drying and calcination steps that prevented hydrous species. Photoluminescence (PL) analysis of Dy3+-doped BaZrO3 exhibited three prominent emission peaks at 452 nm, 573 nm, and 656 nm under 368 nm excitation. These peaks correspond to the characteristic intra-4f electronic transitions of Dy3+ ions, specifically, 4I13/2 to 6H15/2, 4F9/2 to 6H13/2, and 4F9/2 to 6H11/2, representing blue, yellow, and red emissions, respectively. Photoluminescence decay studies showed multi-exponential behavior, with the average lifetime decreasing from 641 mu s in undoped BZO to 492 mu s in Dy3+- doped samples attributed to enhanced non-radiative recombination pathways. Among the codopants, Li+ demonstrated the most significant improvement in luminescence intensity and thermal stability by mitigating defects and optimizing charge compensation.
dc.description.sponsorshipResearch Funds of Balikesir University [BAP-2023/199]; Balikesir University
dc.description.sponsorshipWe would like to thank the Research Funds of Balikesir University (Grant No. BAP-2023/199) and Balikesir University for their generous financial support.
dc.identifier.doi10.1016/j.apradiso.2025.111698
dc.identifier.issn0969-8043
dc.identifier.issn1872-9800
dc.identifier.pmid39919451
dc.identifier.scopus2-s2.0-85216845808
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.apradiso.2025.111698
dc.identifier.urihttps://hdl.handle.net/20.500.14034/2465
dc.identifier.volume218
dc.identifier.wosWOS:001423652700001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofApplied Radiation and Isotopes
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250319
dc.subjectDy3+
dc.subjectAlkali metal co-doping
dc.subjectPL decay
dc.subjectThermal stability
dc.subjectBaZrO3 perovskites
dc.titleStructural and thermal insights into the luminescent behavior of Dy3+-Doped BaZrO3 with alkali metal codopants under UV radiation
dc.typeArticle

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