•연구자: 물리학과 위상원, 이윤상
•발표일: 2023.06.15
•DOI: https://doi.org/10.1016/j.ceramint.2023.03.094
•S.W.Wi et al., Ceramics International (Q1); Volume 49, Issue 12, Pages 19766-19772, 2023
•Abstract
We investigated the structural and luminescent properties of Eu3+-doped (1-x)BaTiO3-xCaZrO3 (BCTZ:Eu). The changes in the structural symmetry of BCTZ:Eu with CaZrO3 substitution and Eu3+ doping was determined using Rietveld refinement of the X-ray diffraction patterns. Under ultraviolet photoexcitation, the specimens exhibited typical red-orange emission peaks resulting from the f–f transitions from Eu3+ ions. The intensities and asymmetry ratios of the emission intensities, as well as Stark splitting of the emission bands from Eu3+ were found to be strongly dependent on the structural phase transformation of BCTZ from tetragonal to rhombohedral. These findings suggest that BCTZ:Eu possesses a great potential for multifunctional devices that have both ferroelectric and luminous properties.