Effects of structural phase changes on the luminescence of Eu-doped (1-x)BaTiO3-xCaZrO3. Issue 12 (15th June 2023)

• Record Type: Journal Article
• Authors: Wi, S.W.; Seo, J.W.; Lee, Y.S.; Chung, J.-S.
• Is Part Of: Ceramics international. Volume 49:Issue 12(2023)
• Page Start: 19766
• Page End: 19772
• Publication Date: 2023-06-15
• Subjects: BaTiO3 -- Perovskites -- Optical properties -- Spectroscopy; MPB morphotropic phase boundary -- PL photoluminescence -- RE rare earth -- XRD X-ray diffraction -- BCTZ (1-x)BaTiO3-xCaZrO3 -- SEM scanning electron microscopy -- EDS energy dispersive X-ray spectroscopy; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2023.03.094
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: We investigated the structural and luminescent properties of Eu 3+ -doped (1- x )BaTiO3 - x CaZrO3 (BCTZ:Eu). The changes in the structural symmetry of BCTZ:Eu with CaZrO3 substitution and Eu 3+ 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 Eu 3+ ions. The intensities and asymmetry ratios of the emission intensities, as well as Stark splitting of the emission bands from Eu 3+ 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.