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在无添加剂条件下,采用共沉淀法合成了花状独居石结构的YPO_4·2H_2O∶Eu~(3+)橙红色荧光粉。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、光致发光光谱(PL)等分析手段对样品的结构、形貌以及发光性能进行了表征。研究了Eu~(3+)掺杂浓度、pH值、磷酸量、合成温度对合成纳米材料的发光性能以及形貌的影响。结果表明,所合成的花状独居石结构的YPO_4·2H_2O∶Eu~(3+)橙红色荧光粉,在392nm紫外光激发下,观察到YPO_4·2H_2O∶Eu~(3+)的发射主峰位置在589nm处。当条件分别为掺杂浓度29%、pH=8、磷酸添加量为7mL、合成温度为80℃时样品具有最强的发光强度。在紫外灯照射下,样品呈现出明亮的橙红色。
In the absence of additive, YPO 4 · 2H 2 O: Eu ~ (3 +) orange-red phosphor with flower-like monazite structure was synthesized by coprecipitation method. The structure, morphology and luminescent properties of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) The effects of Eu 3+ doping concentration, pH value, phosphoric acid content and synthesis temperature on the luminescent properties and morphology of synthesized nanomaterials were studied. The results show that the YPO 4 · 2H 2 O: Eu 3+ orange-red phosphor with flower-like monazite structure is observed under the excitation of 392 nm ultraviolet light, and the emission peak position of YPO 4 · 2H 2 O: Eu 3+ is observed At 589 nm. When the conditions were doping concentration of 29%, pH = 8, phosphoric acid dosage of 7mL, the synthesis temperature of 80 ℃ when the sample has the strongest luminous intensity. The sample showed a bright orange-red color when irradiated with UV light.