硅酸盐荧光粉显现潜在指纹的应用研究

发布时间：2018-06-27 19:22

  本文选题：硅酸盐 + 潜在指纹　； 参考：《中国稀土学报》2014年06期

【摘要】：指纹的法医鉴定被广泛用于犯罪的人身认定,已成为基础的法庭证据。随着稀土荧光粉的快速发展,使检验和鉴定潜在指纹成为了可能。采用高温固相法合成了用于显现潜在指纹的Ba2-xSi O4:Eu2+x荧光粉,测量了在1300℃下保温3 h时样品的激发和发射光谱,研究了不同Ba2+和Eu2+浓度荧光粉的荧光光谱性质。用X射线衍射分析荧光粉在不同浓度的物相,确定还原气氛中Ba2-xSi O4:Eu2+x荧光粉的最佳合成浓度为x=0.08,可得到较好发光性能的硅酸盐荧光粉。重点讨论了对荧光粉粒径大小的优化、粉体的无机后处理和粉体表面有机修饰等性能优化,使其能用于显现清晰的潜在指纹。
[Abstract]:Forensic identification of fingerprints is widely used in personal identification of crime and has become the basis of forensic evidence. With the rapid development of rare earth phosphors, it is possible to test and identify potential fingerprints. Ba2-xSiO4: EU2x phosphors were synthesized by high temperature solid state method. The excitation and emission spectra of the samples were measured at 1300 鈩，

本文编号：2075019