Structural and luminescent properties of Eu-ion-doped CaHfO3
We investigated the structural and luminescent properties of Eu3+-doped CaHfO3, which was synthesized using the solid-state reaction method. The crystal structures of the samples were analyzed by applying the Rietveld refinement technique on their X-ray diffraction patterns. Because of cation vacanc...
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Published in | Journal of luminescence Vol. 226; p. 117490 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.10.2020
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Subjects | |
Online Access | Get full text |
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Summary: | We investigated the structural and luminescent properties of Eu3+-doped CaHfO3, which was synthesized using the solid-state reaction method. The crystal structures of the samples were analyzed by applying the Rietveld refinement technique on their X-ray diffraction patterns. Because of cation vacancies and/or interstitial oxygens, the unit-cell volumes of the samples increased, and the local lattice distortions were alleviated when the Eu3+ concentration increased. For near-ultraviolet photoexcitation, the emission spectra of our samples showed a series of narrow bands, which were assigned to the energy transitions of 5D0 → 7FJ (J = 0, 1, 2, 3, and 4) in the Eu3+ ions. The luminescence behaviors of the samples were evaluated using Judd–Ofelt intensity parameters, which provided useful information regarding the local structure around the Eu3+ ions.
•First study on the emission property of Eu3+-doped CaHfO3.•Doping and temperature dependence of PL spectra.•Rietveld refinement and the Judd-Ofelt analyses and their correlation. |
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ISSN: | 0022-2313 1872-7883 |
DOI: | 10.1016/j.jlumin.2020.117490 |