發(fā)布時(shí)間：2018-06-27 19:22

  本文選題：硅酸鹽 + 潛在指紋�。� 參考：《中國(guó)稀土學(xué)報(bào)》2014年06期

【摘要】：指紋的法醫(yī)鑒定被廣泛用于犯罪的人身認(rèn)定,已成為基礎(chǔ)的法庭證據(jù)。隨著稀土熒光粉的快速發(fā)展,使檢驗(yàn)和鑒定潛在指紋成為了可能。采用高溫固相法合成了用于顯現(xiàn)潛在指紋的Ba2-xSi O4:Eu2+x熒光粉,測(cè)量了在1300℃下保溫3 h時(shí)樣品的激發(fā)和發(fā)射光譜,研究了不同Ba2+和Eu2+濃度熒光粉的熒光光譜性質(zhì)。用X射線衍射分析熒光粉在不同濃度的物相,確定還原氣氛中Ba2-xSi O4:Eu2+x熒光粉的最佳合成濃度為x=0.08,可得到較好發(fā)光性能的硅酸鹽熒光粉。重點(diǎn)討論了對(duì)熒光粉粒徑大小的優(yōu)化、粉體的無(wú)機(jī)后處理和粉體表面有機(jī)修飾等性能優(yōu)化,使其能用于顯現(xiàn)清晰的潛在指紋。
[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，

本文編號(hào)：2075019