E. J. Ansari, S. K. Patle, N. S. Ugemuge, S. J. Dhoble
{"title":"Photoluminescence in singly and co-doped K3Gd(PO4)2:Sm3+, Eu3+ phosphate phosphors","authors":"E. J. Ansari, S. K. Patle, N. S. Ugemuge, S. J. Dhoble","doi":"10.1007/s12648-024-03439-2","DOIUrl":null,"url":null,"abstract":"<div><p>Singly and co-doped K<sub>3</sub>Gd(PO<sub>4</sub>)<sub>2</sub>:Sm<sup>3+</sup>, Eu<sup>3+</sup> phosphate phosphors were prepared using the solid-state reaction (SSR) technique. X-ray diffraction (XRD) analysis confirms the centro-symmetric primitive monoclinic system with space group P2<sub>1</sub>/m. The luminescence was studied by photoluminescence spectroscopy and to explore the energy transfer from Gd<sup>3+</sup> to activator Sm<sup>3+</sup> and Eu<sup>3+</sup> ions, the fluorescence decay curve of the synthesized phosphors was verified. The strong photoluminescence emission (PL) in the visible region recorded at 615 nm was attributed to <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition of Eu<sup>3+</sup> ions and 600 nm attributed to <sup>5</sup>G<sub>5/2</sub> → <sup>4</sup>H<sub>7/2</sub> transition of Sm<sup>3+</sup> ions. The energy transfer from Sm<sup>3+</sup> to Eu<sup>3+</sup> is discussed using an energy level diagram. The CIE coordinates and color-correlated temperature of K<sub>3</sub>Gd(PO<sub>4</sub>)<sub>2</sub> phosphor were estimated. This phosphor has potential applications in w-LEDs.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 6","pages":"2295 - 2306"},"PeriodicalIF":1.6000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s12648-024-03439-2","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Singly and co-doped K3Gd(PO4)2:Sm3+, Eu3+ phosphate phosphors were prepared using the solid-state reaction (SSR) technique. X-ray diffraction (XRD) analysis confirms the centro-symmetric primitive monoclinic system with space group P21/m. The luminescence was studied by photoluminescence spectroscopy and to explore the energy transfer from Gd3+ to activator Sm3+ and Eu3+ ions, the fluorescence decay curve of the synthesized phosphors was verified. The strong photoluminescence emission (PL) in the visible region recorded at 615 nm was attributed to 5D0 → 7F2 transition of Eu3+ ions and 600 nm attributed to 5G5/2 → 4H7/2 transition of Sm3+ ions. The energy transfer from Sm3+ to Eu3+ is discussed using an energy level diagram. The CIE coordinates and color-correlated temperature of K3Gd(PO4)2 phosphor were estimated. This phosphor has potential applications in w-LEDs.
期刊介绍：
Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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