The organic ligands coordinated long afterglow phosphor

The Eu2+ activated strontium aluminates codoped by Dy3+ coordinated by different ligands were synthesized. The coordination of ligands with SAO-ED was characterized by FT-IR spectra and XPS. The introduction of organic ligands didn't change the excitation and emission spectra of SAO-ED, and this was proved by spectrophotometer (F-4500 FL) at room temperature. The organic ligands coordinated SAO-ED has good brightness and long decay time measured with spectrometer (Konica Minolta LS-100) and higher water resistance than that of SAO-ED.