论文部分内容阅读
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 m。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0.1mol%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。
In situ polymerization, the blue phosphor (Y2SiO5: Ce3 +) and polymethylmethacrylate (PMMA) were compounded to produce a transparent and blue fluorescent Y2SiO5: Ce3 + / PMMA rare earth luminescent composite. The structure of the samples was analyzed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The microstructure of the samples was observed by scanning electron microscopy (SEM). The fluorescence spectra and UV- The spectrophotometer analyzes the fluorescence and transmission spectra of the sample. The results show that the Y2SiO5: Ce3 + blue phosphor with X2 monoclinic crystal structure is uniformly distributed in PMMA with particle size of 0.7-2.0 m. The Y2SiO5: Ce3 + / PMMA composites can emit blue fluorescence when the wavelength is 365 nm and the blue fluorescence transmittance of the PMMA matrix composites with 0.1 mol% Y2SiO5: Ce3 + is as high as 75%. This shows that the prepared Y2SiO5: Ce3 + / PMMA composites have good blue fluorescence properties and can be used in the development of transparent solid-state light-emitting devices.