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以甘氨酸快速燃烧法合成了一种新型红色荧光粉SrO·Y2O3:Eu,并用X射线粉末衍射(XRD)、扫描电子显微镜(SEM)及荧光分光光度计(FL)对样品的物相结构、微观形貌及粒度、光谱性质等进行了分析表征。结果表明:制得的样品含有SrY2O4和Y2O3两相,分别属于正交晶系和立方晶系。所合成样品颗粒为球形,一次颗粒粒径为100～200nm。样品的激发主峰在280nm处,为O2-的2p轨道到Eu3+的4f轨道的电荷迁移跃迁所致,主发射峰位于592nm,属于Eu3+的5D0→7F1跃迁,614nm处还有一较强的发射峰,归属于Eu3+的5D0→7F2跃迁。此外,研究发现甘氨酸与硝酸根配比、焙烧温度、Eu3+浓度等条件均对SrO·Y2O3:Eu的亮度有一定的影响。
A new type of red phosphor SrO · Y2O3: Eu was synthesized by fast combustion of glycine. The phase structure of the sample was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spectrophotometer (FL) Morphology and particle size, spectral properties were analyzed and characterized. The results show that the obtained sample contains two phases, SrY2O4 and Y2O3, belonging to orthorhombic and cubic system respectively. The synthesized sample particles are spherical, the primary particle size is 100 ~ 200nm. The main excitation peak of the sample is at 280 nm due to the charge transfer transition from the 2p orbital of O2- to the 4f orbital of Eu3 +. The main emission peak is at 592 nm and belongs to the 5D0 → 7F1 transition of Eu3 + with a strong emission peak at 614 nm. 5D0 → 7F2 Transitions Belonging to Eu3 +. In addition, the study found that the ratio of glycine and nitrate, calcination temperature, Eu3 concentration and other conditions have a certain impact on the brightness of SrO · Y2O3: Eu.