Tunable emission, concentration quenching and crystallographic sites of Eu2+ in Sr3Y(PO4)3

摘要: A series of Sr3Y(PO4)3:Eu2+ samples are synthesized by the high temperature solid-state method. shows an asymmetrical emission band under excitation 350 nm. The peaks at 426 nm and 497 assigned to nine-coordination Eu2+ six-coordination Eu2+, respectively. effects doping content on intensity color observed, concentration quenching effect is also observed. For two different luminescence centers, mechanisms dipole-dipole interaction quadrupole-quadrupole interaction, And critical distance energy transfer calculated turns out be about 3.67 results above show that comes from centers in lattice.