【摘要】 采用柠檬酸钠为表面活性剂的水热法制备了NaGd（MoO4）2∶xEu³⁺（x=10%,20%,30%,40%）和NaGd（MoO4）2∶7%Eu³⁺,ySO2-4/BO3-3荧光粉,对所制备样品的晶相、形貌、发光性质进行了表征。XRD分析表明NaGd（MoO4）2∶xEu³⁺和NaGd（MoO4）2∶7%Eu³⁺,ySO2-4/BO3-3荧光粉均为四方相的白钨矿结构;红外光谱测试发现有SO2-4/BO3-3的特征吸收峰,这表明SO2-4/BO3-3被成功掺入基质;荧光光谱测试说明,在NaGd（MoO4）2基质中Eu³⁺掺杂量为30%时发光最强;通过研究NaGd（MoO4）2∶7%Eu³⁺,ySO2-4/BO3-3荧光粉的发射光谱,发现适量的SO2-4/BO3-3掺杂会使Eu³⁺的特征发射增强,且掺杂10%SO2-4或10%BO3-3后可以减少3%左右的Eu³⁺掺杂,起到了节约稀土掺杂量的作用。更多还原

【Abstract】 NaGd（MoO₄）₂∶xEu3+（x=10%,20%,30%,40%）and NaGd（MoO4）2∶7%Eu3+,ySO₄^2-/BO₃^3- phosphors were prepared by hydrothermal method with sodium citrate as a surfactant.The crystal phase,morphology and luminescent properties of the prepared samples were characterized.The results showed that the structures of NaGd（MoO4）2 ∶xEu3+and NaGd（MoO4）2∶7% Eu3+,ySO₄^2-/BO₃^3- phosphors were tetragonal scheelite.The characteristic absorption peak of SO₄^2-/BO₃^3- was found by infrared spectroscopy,indicating that SO₄^2-/BO₃^3- was successfully incorporated into the matrix.The emission spectrum of NaGd（MoO4）2∶30%Eu3+was the strongest.Besides,by studying the emission spectrum of NaGd（MoO4）2 ∶7%Eu3+,ySO₄^2-/BO₃^3- phosphors,it can find that appropriate doping of SO₄^2-/BO₃^3- can enhance the characteristic emission intensity of Eu3+.The addition of 10% SO2-4 or 10% BO3-3 can reduce the doping of Eu3+by about 3%,which can save the doping amount of rare earth.更多还原