Title
Structural and luminescent properties of Eu-ion-doped CaHfO3
Author
Soyeong Jang, Hyunseo Kim, S. W. Wi, Hyeontae Lim, J.-S. Chung, Yoonseo Nah, Dong Ha Kim, Y. S. Lee
Year
2020
Journal
Journal of Luminescence
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.
Instrument
FP-8500
Keywords
Fluorescence, Photoluminescence, Solid state, Inorganic chemistry, Materials