Luminescent properties of Ba3Gd(BO3)3:Eu3+ phosphor for white LED applications

Luminescent material Ba3Gd(BO3)(3) doped with Eu3+ ion was prepared by high temperature solid-state method. The preparing conditions, luminescent properties, and particle morphology of Ba3Gd(BO3)(3):Eu3+ phosphor were studied with X-ray diffraction (XRD), fluorescence spectroscopy, and scanning electron microscopy (SEM). The results obtained by XRD showed that pure phase of Ba3Gd(BO3)(3) was obtained at 1000 degrees C. Images from SEM displayed that the particles of Ba3Gd(BO3)(3):Eu3+, phosphor had a spherical shape with an average diameter of about 200-400 nm. The luminescence spectra showed that Ba3Gd(BO3)(3):Eu3+ phosphor was effectively excited by the near ultraviolet (UV) tight (396 nm) and blue light (466 nm). The main emission peaks of Ba3Gd(BO3)(3):Eu3+, phosphor were assigned to the supersensitive transition D-5(0)-> F-7(2) (611 and 616 nm) of Eu3+ ion when samples were excited at 255 and 396 nm, respectively, and the luminescent intensity of Ba3Gd(BO3)(3):Eu3+ at 611 and 616 nm reached to the maximum when the doped content of Eu3+ ion was 10mol.%. Therefore, this phosphor could be a promising red component for possible applications in the field of white LED.