固相合成Ca2SrMoO6-Eu红色荧光粉及其性能研究
毕业论文关键词：红色荧光粉；钼酸盐；Eu3+离子；高温固相法
Study on solid phase synthesis and properties of Ca2SrMoO6-Eu red phosphor
Abstract: The phosphor of molybdate matrix has excellent stability and luminescent properties,so it has great potential in application. Because of the special nature of molybdate, Eu3+-doped molybdate red phosphor can effectively absorb blue violet led emission spectra, and transfer to the doped rare earth ions in molybdate matrix and molybdate phosphors is a promising red fluorescent powder materials. Calcium molybdate red fluorescent powder due to its low cost, space structure is stable and in the ultraviolet and near ultraviolet region of light has good absorption and is a new kind of fluorescent powder.In this study, Eu3+ was prepared by using high temperature solid phase method to prepare the phosphor Ca2SrMoO6 doped with different concentrations of Ca2SrMoO6- Eu3+ red fluorescent powder, The effects of different concentration of Eu3+ on the phase and luminescence properties of phosphors were studied by XRD, excitation and emission spectra. The structure, morphology and optical properties of the prepared samples were characterized by scanning electron microscopy, XRD diffraction and fluorescence spectrophotometer.
Keywords: red phosphor; molybdate; Eu3+ ions; solid state reaction
目 录
1 绪论 . 1
1.1 荧光粉的发光过程 .. 1
1.1.1 荧光粉发光过程的能量传递 ... 2
1.2 双钙钛矿结构钼酸盐体系结构 .. 3
1.3 双钙钛矿结构钼酸盐体系合成方法 .. 5
1.3.1 高温固相法 ... 5
1.3.2 溶胶凝胶法 ... 5
1.3.3 化学沉淀法 ... 6
1.3.4 水热法 ... 6
1.4 钼酸盐体系红色荧光粉的特点 .. 6
1.5 钼酸盐红色荧光粉的研究现状 .. 7
1.5.1 碱土金属钼酸盐 ... 7
1.5.2 稀土钼酸盐 ... 7
1.5.3复合钼酸盐荧光粉 8
1.6 Eu3+离子的发光特性 8
1.7 本论文选题研究内容及研究意义 .. 9
1.7.1 研究内容 ... 9
1.7.2 研究意义 . 10
2 实验部分 ... 10
2.1 样品制备（高温固相法） 10
2.2 实验所需仪器及设备 11
2.3 Ca2SrMoO6-Eu3+
红色荧光材料的合成 .. 14
2.3.1 实验准备 . 14
2.3.2 实验过程 . 14
2.4 样品表征 14
2.4.1 荧光粉 Ca2SrMoO6-Eu3+的XRD 分析 .. 14
2.4.2 荧光粉 Ca2SrMoO6-Eu3+的SEM 形貌分析 .. 15
2.4.3 荧光粉 Ca2SrMoO6-Eu3+的DSC、TG图 .. 16
2.4.3 荧光粉 Ca2SrMoO6-Eu3+的荧光光谱性质 . 17
下一篇：高铁用铜合金接触线强化机理研究