| Abstract
| - The aim of this work is to report on the luminescence properties of SrY2O4 activated by Eu3+ ion. Powdersamples were prepared by solid-state reaction. X-ray diffraction powder data, photoluminescence, and high-resolution spectroscopy were carried out. Results revealed that the Eu3+ ions occupied three nonequivalentsites, with one at the Sr site, one at the Y(1) site, and another at the Y(2) site. Their spectra wavelengths forthe 7F0−5D0 transition are located at 578.49, 581.86, and 580.63 nm, respectively. The corresponding charge-transfer transitions are located at 248, 257, and 270 nm, respectively, which are also confirmed by theoreticalanalysis.
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