New blue-emitting Ca2(1 − x)B2P2O10:2xEu2+ (0.005 ≤ x ≤ 0.030) phosphors: Synthesis and photoluminescence properties

Abstract A series of new blue-emitting Ca 2(1 −  x ) B 2 P 2 O 10 :2 x Eu 2+ ( x  = 0.005, 0.010, 0.015, 0.020, 0.025, 0.030 mol%) phosphors were synthesized by the solid state reaction method. The X-ray diffraction (XRD) and scanning electron microscope (SEM) were utilized to characterize the prepared samples. The luminescence properties of the phosphor were studied by excitation and emission spectra. The optimal concentration of Eu 2+ ions in Ca 2 B 2 P 2 O 10 was determined to be x  = 0.010 mol%, and the concentration quenching mechanism was studied in detail. These results suggest that Ca 2 B 2 P 2 O 10 :Eu 2+ is a potential blue phosphor for application in WLEDs.