Sr4Y6(AlO4)x(SiO4)6-xOδ:Eu2+: A novel apatite structure blue-green emitting phosphor. Issue 16 (November 2018)

• Record Type: Journal Article
• Authors: Yan, Shan; Jin, Ye; Pan, Dai; Xiang, Guotao; Luo, Xu; Yang, Yuanqing
• Is Part Of: Ceramics international. Volume 44:Issue 16(2018)
• Page Start: 19900
• Page End: 19906
• Publication Date: 2018-11
• Subjects: Apatite-structure phosphor -- Sr4Y6(AlO4)x(SiO4)6-xO(1-x/2): Eu2+ -- Interaction mechanism -- Energy transfer -- Thermal stability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.07.252
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A series of typical apatite-structure phosphors Sr4 Y6 (AlO4 )x (SiO4 )6-x O(1-x/2) :0.01Eu 2+ (x = 0, 1, 1.5, 1.7, 2) and Sr4 Y6 (AlO4 )2 (SiO4 )4 : y Eu 2+ (y = 0.003, 0.005, 0.01, 0.02, 0.04, 0.05, 0.06, 0.08, 0.09) have been synthesized by a conventional high temperature solid-state reaction. Two different Eu 2+ centers for Sr4 Y6 (AlO4 )2 (SiO4 )4 : y Eu 2+ samples and the energy transfer between Eu(I) and Eu(II) have been analyzed by the photoluminescence spectra and the decay curves. The interaction mechanism has been indicated to be a dipole-dipole interaction between the Eu(I) and Eu(II). Besides, the temperature-dependent emission intensity of Sr4 Y6 (AlO4 )2 (SiO4 )4 : 0.06 Eu 2+ was investigated, and it showed a blue-shift with the increasing temperature. The emission color could be tuned from blue to green by adjusting the ligand (XO4 ) or by increasing the concentration of Eu 2+ . All of them suggested that the typical apatite-structure phosphor Sr4 Y6 (AlO4 )x (SiO4 )6-x O(1-x/2) : Eu 2+ might have a potential application as a UV-LED phosphor.