欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用溶胶-凝胶法制备Li＋掺杂改性的Y2SiO5：Pr3＋上转换发光材料,考察了Li＋掺杂对样品晶型及发光性能的影响。采用XRD,DSC-TGA,FS对所制备的材料进行表征,结果表明Li＋掺入浓度在7%～8%（摩尔分数）之间会引起Y2SiO5晶体类型由X1型转变为X2型,且Li＋掺入后样品转晶型温度由950℃降至800℃;样品经800℃煅烧处理后以X1型Y2SiO5为主相,850℃煅烧处理后以X2型Y2SiO5为主相;Li＋掺入同时会提高Y2SiO5：Pr3＋材料的上转换发光强度,Li＋最佳掺杂浓度为10%,对于双掺杂Pr3＋,Li＋：Y2SiO5体系中Pr3＋最佳掺杂浓度为1.2%。
英文摘要：
Li＋ co-doped Y2SiO5： Pr3＋ upconversion luminescent crystal was prepared by using sol-gel method.The prepared crystals were characterized by XRD,DSC-TGA and FS.The results indicated that the doping of Li＋ can cause crystal phase transition of Y2SiO5 and improve the crystal luminescent intensity.When the molar concentrations of doped Li＋ were between 7% and 8%,it would cause a crystal phase change of Y2SiO5 from X1 type to X2 type.The crystallization temperature of sample co-doped with Li＋ would decrease from 950 to 800 ℃,and the main crystal of Y2SiO5 showed a X1 type after annealing at 800 ℃ in the air.On the other hand,the main crystal of Y2SiO5 showed a X2 type when it was calcined at 850 ℃.At the same time,co-doped with Li＋ would improve the optical efficiency of the samples,and the optimized co-doping concentration of Li＋ is 10%.For dual doping samples,an optimize concentration of Li＋ of 1.2% can lead to an optimize upconversion efficiency of the crystals.
同期刊论文项目
同项目期刊论文
期刊信息
位置：