Abstract

Eu²⁺, Dy³⁺ co-doped strontium-magnesium silicate phosphors, Sr₂MgSi₂O₇:Eu²⁺, Dy³⁺ (SMSEDs), have shown great potential in optoelectronic device due to their unique luminescent property. However, their potential applications in forensic science, latent fingermark detection in particular, are still being investigated. In this contribution, SMSEDs were successfully employed to latent fingermarks on a variety of non-porous and semi-porous surfaces, including aluminum foil, porcelain, glass, painted wood, colored paper, and leather. All the results illustrated that this luminescent powder, as a long-lasting phosphorescence material (LLP), was an ideal time-resolved detection reagent of fingermark for elimination of background interferences from various difficult substrates, and offered a good contrast to allow their identification without the need to enhance the results compared to nanosized organic fluorescent powder.

© 2016 The Author(s)

Fluorescence and phosphorescence properties of new long-lasting phosphor Ba₄(Si₃O₈)₂:Eu²⁺, Dy³⁺

Yu Gong, Yuhua Wang, Yanqin Li, Xuhui Xu, and Wei Zeng
Opt. Express 19(5) 4310-4315 (2011)

Persistent luminescence fading in Sr₂MgSi₂O₇:Eu²⁺,R³⁺ materials: a thermoluminescence study

Hermi F. Brito, Jorma Hölsä, Högne Jungner, Taneli Laamanen, Mika Lastusaari, Marja Malkamäki, and Lucas C.V. Rodrigues
Opt. Mater. Express 2(3) 287-293 (2012)

Near infrared photostimulated persistent luminescence and information storage of SrAl₂O₄:Eu²⁺,Dy³⁺ phosphor

Haibo Liu, Baoluo Feng, Li Luo, Chunlong Han, and Peter A. Tanner
Opt. Mater. Express 6(11) 3375-3385 (2016)

Emission color variation of (Ba,Sr)₃BP₃O₁₂:Eu²⁺ phosphors for white light LEDs

Te-Wen Kuo, Wei-Ren Liu, and Teng-Ming Chen
Opt. Express 18(3) 1888-1897 (2010)

Tunable afterglow Ca_1 − xSr_xAl₂O₄:Eu²⁺, Nd³⁺ phosphors with dependence of an excitation wavelength

Lulu Li, Panpan Li, Yixi Wu, Jing Li, Xinlian Zhang, Shiqing Xu, and Junjie Zhang
Opt. Lett. 49(2) 294-297 (2024)