EuW_2O_6(OH)_3荧光粉的水热法合成及发光性能

Hydrothermal Synthesis and Luminescence Properties of Red Phosphor EuW_2o_6(OH)_3

以Eu_2O_3和Na_2WO_4·2H_2O为原料,采用水热法合成了属纯单斜相结构的EuW_2O_6(OH)_3红色荧光粉,分别采用XRD、FT-IR、SEM、PL测试手段对产物的物相组成、颗粒形貌和发光性能等进行了表征。结果表明,pH值对样品形貌有显著影响,pH=6时可以得到均匀规则的球状粉体。在394nm光的激发下,EuW_2O_6(OH)_3荧光粉的617nm发射峰在pH=6时达到最大值。

Red phosphor EuW206 （OH）a with monoclinic structure was synthesized via a facile hydrothermal method. The structure, morphologies and luminescence properties of sample were characterized by X-ray powder diffraction（XRD）, fourier transform infrared spectroseopy（FT-IR）, scanning electron microscopy（SEM）, and photoluminescence luminescent spectrurn（PL）. The results show that the pH value plays important roles in the morphologies of samples. EuW2 06 （OH）3 powder with uniform spherical morphology can be obtained at pH= 6. The emission spectrum under 394nm excitation exhibits strong 617nm emission and reaches maximum value at pH= 6.