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钒酸盐在真空紫外的吸收截面较大,并且具有有效的基质敏化带,被认为是优良的荧光粉基质材料。通过研究发现,将硼酸三丁酯引入到钒酸盐之中,形成了钒硼酸盐体系,将其作为红色荧光粉的基质材料,可以改善红色荧光粉的纯度和发光强度。采用共沉淀法合成了Y0.9B0.3V0.7O3.7∶0.04Eu3+,0.06Gd3+红色荧光粉,通过XRD、扫描电子显微镜(SEM)和荧光分光光度仪对粉体的结构、形貌及荧光性能进行了分析,研究其最佳的制备工艺条件。结果表明,Y0.9B0.3V0.7O3.7∶0.04Eu3+,0.06Gd3+是一种球形颗粒的混合物,其最佳的制备条件是pH=7,水浴温度为70℃,煅烧温度为1200℃。
Vanadate has a large absorption cross section in vacuum ultraviolet light and has an effective matrix sensitization band, which is considered as an excellent phosphor matrix material. It was found through the study that tributyl borate was introduced into vanadate to form a vanadium borate system, which can be used as the matrix material of the red phosphor to improve the purity and luminous intensity of the red phosphor. Y0.9B0.3V0.7O3.7:0.04Eu3 +, 0.06Gd3 + red phosphors were synthesized by co-precipitation method. The structure, morphology and fluorescence of the powders were characterized by XRD, SEM and fluorescence spectroscopy The analysis was carried out to study the best preparation conditions. The results show that Y0.9B0.3V0.7O3.7:0.04Eu3 +, 0.06Gd3 + is a mixture of spherical particles. The optimal preparation conditions are pH = 7, water bath temperature of 70 ℃ and calcination temperature of 1200 ℃.