Eu3+ doped La3PO7 nanoparticles were successfully synthesized under facial combustion method. The nano-phosphors then were
characterized by some techniques including X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM),
photoluminescence spectrum (PL), and lifetime decay. SEM and TEM micrographs reveal exhibit of the La3PO7: Eu3+ nanopowders in spherical
morphology with an average size of about 20 nm, matching with Scherrer’s formula calculation. Otherwise, the influence of annealing
temperature and concentration of Eu3+ ions on optical characteristics of Eu3+ was doped La3PO7, and optical properties were investigated too.
The photoluminescence shows the strong red emission originating from the 5D0¼7FJ (J = 1, 2, 3, and 4) transitions of Eu3+ and the 614nm
emission from the 5D0¼7F2 electronic dipole transition is dominant.