采用水热法合成前驱体WO3！·0.34H2O,以此前驱体分别采用水热法和高温固相法合成BaWO4∶Eu3+荧光粉,并对此荧光粉的光谱性能进行了研究。实验结果表明：水热法制备的荧光粉BaWO4∶Eu3+与高温固相法制备的荧光粉具有相同的光谱性质；荧光粉BaWO4∶Eu3+的激发和发射光谱都是Eu3+的f→ f的特征峰,激发光谱的峰位分别为416 nm、464 nm、535 nm,且464 nm吸收最强；发射光谱的峰位分别为578 nm、592 nm、612 nm、703 nm,且612 nm的发射最强；由浓度实验得知其猝灭浓度为20at%。此荧光粉可与蓝光LED相匹配的红色荧光粉,可掺杂在传统白光LED(蓝光LED+黄色荧光粉YAG：Ce)中增加红光发射,弥补其显色性低的缺陷。
The powders WO3!·0. 34H2O were successfully prepared by hydrothermal method,and the red phosphors BaWO4 ∶ Eu3+ were synthesis by high-temperature solid state reaction and hydrothermal method. The results show that the phosphors for both of these two methods have the same excitation and emition spectrum. The excition and emittion spectrum are f → f of Eu3+, with the excitation spectra at 416 nm, 464 nm, 535 nm, and the higher one is 464 nm and the emittion spectra at 578 nm, 592 nm, 612 nm, 703 nm,and the higher one is 612 nm. The result show that the better doped concentration is 20 at%. The typical phosphors can match blue LED to develop the red emittion and to make up the defects of low color rendering index.
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