The invention discloses short rod-shaped TbPO4
powder with excellent
luminescence property and a preparation method thereof. The preparation method is characterized by comprising the following steps: adopting
terbium trinitrate and monoammonium
phosphate as raw materials, respectively dissolving
terbium salt and NH4H2PO4 into deionized water according to a
molar ratio of PO4<3-> and Tb<3+> being (40:1), evaporating the NH4H2PO4 solution to be recrystallized, dissolving the crystallized substance into the deionized water, mixing with the
terbium salt solution, and stirring; adjusting the pH value to 3 to form a precursor solution; placing the precursor solution into a reaction kettle with a
polytetrafluoroethylene lining to have
hydrothermal reaction; preserving the heat, centrifuging the generated white precipitate, washing with deionized water, and
drying the white precipitate to obtain the short rod-shaped TbPO4
powder. The short rod-shaped hexagonal-phase TbPO4
powder is synthesized by adopting the low-temperature hydrothermal method, simple operation is realized, the preparation period is short, the crystals are regular, the
crystal grain is uniform, the
crystallization degree is high, the dispersion property is good, and the
luminescence property is good.