发光学报2013，Vol.34Issue(8)：988-993,6.DOI:10.3788/fgxb20133408.0988
亚微米Sr2MgSi2O7∶Eu2+,Dy3+的水热共沉淀制备及发光性能研究
Hydrothermal-precipitation Synthesis and Optical Properties of Submicron Sr2MgSi2O7∶ Eu2 + , Dy3 + Phosphors
摘要
Abstract
Long-lasting phosphors Sr2MgSi2O7 ∶ Eu2+,Dy3+ were synthesized via hydrothermalprecipitation route.X-ray diffraction (XRD),scanning electron microscopy (SEM),photoluminescence (PL),as well as thermoluimnescence (TL) were utilized to characterize the long-lasting phosphors.XRD analysis indicates the obtained Sr2MgSi2O7∶Eu2+,Dy3+ sample annealed at 1 000 ℃ for 4 h is tetragonal crystal phase.The crystallinity increases with temperature.The obtained phosphors consist of well dispersed submicron particles with a narrow size distribution of 200 ～ 300 nm,and these phosphor particles show blue emission corresponding to 5 d-4f (467 nm) of Eu2+ under the excitation of visible light (399 nm).The afterglow time of sample synthesized at 1 100 ℃ is longer than those synthesized at 1 000 ℃ and 1 050 ℃.The thermoluminescence spectra of samples show broad bands centering at 330 ～ 340 K,which is suitable for the generation of long-lasting phosphorescence.关键词
水热共沉淀法/稀土离子/长余辉/硅酸镁锶Key words
hydrothermal-coprecipitation method/ rare earth ions/ long-lasting phosphorescence/ strontium magnesium disilicate分类
数理科学引用本文复制引用
张浩然,陈小博,雷炳富,肖勇,刘应亮,郑明涛,董汉武..亚微米Sr2MgSi2O7∶Eu2+,Dy3+的水热共沉淀制备及发光性能研究[J].发光学报,2013,34(8):988-993,6.基金项目
华南农业大学引进人才科研启动基金 （）
国家自然科学基金(21171071,21071063,51203053)资助项目 （21171071,21071063,51203053）
