Multifaceted luminescence in lanthanide-activated microrods for advanced multicolor anti-counterfeiting

Abstract

The increasing demand for robust anti-counterfeiting measures has prompted the development of advanced luminescent materials that offer multifaceted capabilities for secure information encryption and authentication. Here we present the rational...

Enhancing persistent radioluminescence in perovskite scintillators through trap defect modulation

“…18,19 In contrast, lanthanide-doped fluoride scintillators can store X-ray energy in their trap defects within crystal lattices and subsequently release it in the form of radioluminescence afterglow upon thermal, light, or force stimulation. 20–23 However, a substantial portion of X-ray-generated electrons is retained in deep traps and is only read out under relatively high temperatures.…”

Achieving tunable photoluminescence emission in CaCdGe7O16:Sm3+ persistent luminescence phosphors for optical anti-counterfeiting

“…20 Xie et al reported that they successfully developed a class of lanthanide-doped heterostructured microrods based on NaYF 4 :Tb 3+ /NaYF 4 :Eu 3+ that were capable of multifaceted luminescence and afterglow emission. 21 Although these phosphors showed great potential in the field of information security, they could be easily duplicated by substitutes and they require a complicated production process, making them unsuitable for to use in a lot of sophisticated anti-counterfeiting applications. 22 Consequently, there is still an urgent need to develop multi-coloured luminescence anti-counterfeiting materials with a high level of security, and that can emit different coloured luminescence under different conditions.…”