Structural and luminescent properties of Eu-ion-doped CaHfO3
- Authors
- Jang, S.; Kim, H.; Wi, S.W.; Lim, H.; Chung, J.-S.; Nah, Y.; Kim, D.H.; Lee, Y.S.
- Issue Date
- Oct-2020
- Publisher
- Elsevier B.V.
- Keywords
- CaHfO3; Eu3+; Judd–ofelt (JO) analysis; Red emission; Rietveld refinement
- Citation
- Journal of Luminescence, v.226
- Journal Title
- Journal of Luminescence
- Volume
- 226
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/38611
- DOI
- 10.1016/j.jlumin.2020.117490
- ISSN
- 0022-2313
- Abstract
- 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. © 2020
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