Y_(2)O_(3):Yb^(3+),Er^(3+)上转化荧光纳米粒子在潜指纹显现中的应用

Y_(2)O_(3):Yb^(3+),Er^(3+)Upconversion Luminescence Nanoparticles in Latent Fingerprint Development

文章通过高温煅烧方法制备出Y_(2)O_(3):Yb^(3+),Er^(3+)纳米粒子,通过XRD、TEM和元素面扫描对其特性进行研究。通过该方法成功制备出Y_(2)O_(3):Yb^(3+),Er^(3+)纳米粒子,该纳米粒子具有较好的分散性,尺寸约为100 nm。在980 nm近红外光的激发下,产生绿色和红色两个发光带。Y_(2)O_(3):Yb^(3+),Er^(3+)在980 nm近红外光的激发下,可以有效地显现红色纸盒和绿色塑料卡片等带有颜色干扰的非渗透性客体表面的潜指纹,由于激发波长为近红外光,可以完全避免背景荧光的干扰,最大程度上显现指纹的一级和二级结构特征。此外,在与商品红色荧光粉末的比较研究中发现,在有荧光特性的渗透性客体表面的潜指纹显现中,Y_(2)O_(3):Yb^(3+),Er^(3+)纳米粒子具有优势,呈现出更加清晰的指纹轮廓和纹线,可以有效消除背景花纹的干扰,具有较高的灵敏度和选择性。

In this paper,Y_(2)O_(3):Yb^(3+),Er^(3+)nanoparticles were prepared by high temperature calcination.The properties of Y_(2)O_(3):Yb^(3+),Er^(3+)nanoparticles were studied by XRD,TEM and elemental surface scanning.The nanoparticles were successfully prepared and the nanoparticles had good dispersion and the size was 100 nm.Under the excitation of 980 nm near-infrared light,two luminous bands of green and red were produced.Based on its excellent upconversion luminescence performance and nanometer size,the application in latent f ingerprint development was studies.Under the excitation of 980 nm near-infrared light,Y_(2)O_(3):Yb^(3+),Er^(3+)can effectively display the latent f ingerprint on the surface of non-permeable objects with color interference such as red cartons and green plastic cards.Due to the excitation wavelength of near-infrared light,the interference of background fluorescence can be completely avoided,and the primary and secondary structural characteristics of f ingerprints can be displayed.In addition,in the comparative study with commercial red fluorescent powder,it was found that Y_(2)O_(3):Yb^(3+),Er^(3+)nanoparticles had advantages in the latent f ingerprint development on the surface of transmitted objects with fluorescence characteristics,showing clearer f ingerprint lines,which can effectively eliminate the interference of background patterns,and latent f ingerprint development performance was excellent.