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Polycrystal of GdPO4:RE3+(RE=Tb, Tm) phosphors were prepared by solid- state method. Vacuum ultraviolet excitation and emission spectrum and the energy transfer mechanism between the host and dopants of Tb3+ and Tm3+ were investigated respectively. The emission of Gd3+ at 313 nm was enhanced by the strong absorption of CTS of Tm3+ at 180 nm in GdPO4: Tm. It has also been concluded that the excitation of Gd3+ is transferred to Tb3+ and then emission peaks of 5DJ→7FJ of T b3 + were observed.
Polycrystal of GdPO4: RE3 + (RE = Tb, Tm) phosphors were prepared by solid-state method. Vacuum ultraviolet excitation and emission spectrum and the energy transfer mechanism between the host and dopants of Tb3 + and Tm3 + were studied respectively. The emission of Gd3 + at 313 nm was enhanced by the strong absorption of CTS of Tm3 + at 180 nm in GdPO4: Tm. It has also been noted that the excitation of Gd3 + is transferred to Tb3 + and then emission peaks of 5DJ → 7FJ of T b3 + were observed.