Structural and luminescent properties of Eu-ion-doped CaHfO3
- 주제(키워드) CaHfO3 , Eu3 , Judd–ofelt (JO) analysis , Red emission , Rietveld refinement
- 등재 SCIE, SCOPUS
- 발행기관 Elsevier B.V.
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000169519
- 본문언어 영어
- Published As https://dx.doi.org/10.1016/j.jlumin.2020.117490
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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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