Energy transfer between Ce3+ Gd3+ or Tb3+ in KNaSO4 microphosphor

摘要: KNaSO4 microphosphor doped with Ce,Gd and Ce,Tb prepared by a wet chemical method was studied using X-ray diffraction (XRD), scanning electron microscopy (SEM) photoluminescence (PL) characterization. has 5-µm particle size detected SEM. KNaSO4:Ce(3+),Tb(3+) showed blue green emission (at 494 nm, 557 nm, 590 nm) of Tb(3+) due to (5)D(4)  → (7)F(J) (J = 4, 5, 6) transitions. KNaSO4:Ce(3+),Gd(3+) luminescence in the ultraviolet (UV) light region at 314 nm for an excitation 271 nm wavelength. It observed that efficient energy transfer took place from Ce(3+)  → Gd(3+)  → Tb(3+) sublattices indicating could effectively sensitize Gd(3+) or (green emission). weakened enhanced significantly KNaSO4. This paper discusses development understanding effect on KNaSO4:Ce(3+).