Y2SiO5:Ce3+/PMMA稀土发光复合材料的制备及其荧光性能的研究

Preparation and Luminescent Properties of Y2SiO5: Ce3 +/PMMA Composites

摘要:

采用原位聚合法, 将蓝色荧光粉（Y2SiO5:Ce3+）和聚甲基丙烯酸甲酯（PMMA）复合，制备出透明且具有蓝色荧光性能的Y2SiO5:Ce3+/PMMA稀土发光复合材料。利用X射线衍射仪（XRD）和傅里叶红外吸收光谱仪（FT-IR）对样品进行结构分析；用扫描电镜（SEM）对样品进行微观形貌观察；用荧光光谱测试仪和紫外-近红外分光光度计对样品的荧光性能和透射光谱进行分析。结果表明：具有X2型单斜晶体结构的Y2SiO5:Ce3+蓝色荧光粉在PMMA中分布均匀，其粒度为0.7~2.0 mm。在波长为365 nm紫外光激发下，Y2SiO5:Ce3+/PMMA复合材料能够发射出蓝色荧光，且0.1 mol% Y2SiO5:Ce3+含量的PMMA基复合材料的蓝色荧光透光率高达75%。这表明所制备的Y2SiO5:Ce3+/PMMA复合材料具有良好的蓝色荧光性能，可用于透明固体发光器件的研制

Abstract:

The Y2SiO5:Ce3+/PMMA composites were prepared by in-situ polymerization with blue photoluminescent powder Y2SiO5:Ce3+ and poly methyl methacrylate (PMMA) as starting materials. The obtained samples were characterized by XRD, FT-IR, SEM, etc. Results show that the Y2SiO5:Ce3+ luminescent powder with particle size of 0.7~2.0 μm has the X2-monoclinic crystal structure and is homogeneously distributed in the PMMA. Excited by the ultraviolet light with the wavelength of 365 nm, the Y2SiO5:Ce3+/PMMA composites exhibit the blue photoluminescence and the transparency of blue photoluminescence achieves a high value of 75%. Consequently, the obtained Y2SiO5:Ce3+/PMMA composites can be used to fabricate the transparent luminescent apparatus.