Preparation and characterization of Yttrium based luminescence phosphors

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dc.contributor.authorMuresan L.E.
dc.contributor.authorAyvacikli M.
dc.contributor.authorGarcia Guinea J.
dc.contributor.authorCanimoglu A.
dc.contributor.authorKarabulut Y.
dc.contributor.authorCan N.
dc.date.accessioned2025-04-10T11:08:26Z
dc.date.available2025-04-10T11:08:26Z
dc.date.issued2017
dc.description.abstractCe doped Yttrium aluminate modified by replacing different molar part of aluminium or gallium (Y3Al5−xGaxO12) and Yttrium silicate phosphors activated with Ce and Tb (Y2SiO5:Ce3+,Tb3+) were synthesized by solid state reaction and a gel combustion method, respectively. X-ray diffraction and Scanning electron microscope (SEM) techniques are used to identify their structures and morphologies. Luminescence characteristics are measured and spectroscopic data confirm that Y2SiO5:Ce3+, Tb3+ phosphors can be effectively excited upon UV excitation light and X-ray irradiation, resulting in intense blue and green emissions, respectively. This energy transfer takes place by means of a non-radiative process inside Ce3+-Tb3+ clusters formed in the host matrix. Tb3+ doped Y2SiO5 yields both blue emission 5D3 → 7Fj (j = 3,4,5,6) and green emission 5D4 → 7FJ (J = 3,4,5,6) of Tb3+. Y3Al5−xGaxO12:Ce3+ phosphors exhibit a broad blue emission band originating from allowed 5d-4f transition of the Ce3+ ions under different excitation sources but the broad emission band shifts with increasing of Ga3+ content. This work presents a quantitative understanding of host material's on dopant's luminescence properties and thereby provides an optimization guideline, which is extremely demanding for the development of new luminescent materials. © 2017 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.optmat.2017.01.044
dc.identifier.urihttp://hdl.handle.net/20.500.14701/48040
dc.publisherElsevier B.V.
dc.titlePreparation and characterization of Yttrium based luminescence phosphors
dc.typeArticle

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