The luminescent properties of yttrium oxyapatite doped with Eu3+ ions

Abstract

The structural and luminescent properties of Ca2Y8(SiO4)6O2 (CYS) silicate based oxyapatite doped with Eu3+ ions have been reported in this paper. The sample was synthesized using reflux method assisted by urea subsequent degradation. Very specific, shеlland rope-like morphologies were observed by SEM. The powder X-ray diffraction study revealed that the Eu3+: CYS system crystallized in a hexagonal lattice structure (space group P63/m) characteristic of oxyapatite. In the host oxyapatite structure, а partial replacement of Ca2+ аnd Y3+ ions by luminescent active Eu3+ ions have been done, and its photoluminescent spectra were analyzed. The performed analysis indicate the presence of Eu3+ ions in both, nine-fold coordinated 4f, and seven-fold coordinated 6h sites, showing a slight shift towards the blue area in comparison to a typical spectra of other yttrium-silicate phases as hosts. [Projekat Ministarstva nauke Republike Srbije, br. 142066]

Keywords

• urea assisted reflux method
• europium doped yttrium oxyapatites
• luminescent properties
• crystal structure