Structural and luminescent properties of Eu-ion-doped CaHfO3

• Published in: Journal of luminescence Vol. 226; p. 117490
• Main Authors: Jang, Soyeong, Kim, Hyunseo, Wi, S.W., Lim, Hyeontae, Chung, J.-S., Nah, Yoonseo, Kim, Dong Ha, Lee, Y.S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2020
• Subjects: CaHfO3; Eu3; Judd–ofelt (JO) analysis; Red emission; Rietveld refinement; Eu3; Red emission; Rietveld refinement; Judd–ofelt (JO) analysis; CaHfO3
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2020.117490

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.