Dual-emissive persistent luminescent phosphors for multi-mode anti-counterfeiting and ratiometric luminescent aptasensors

Abstract

Persistent luminescent phosphors (PLPs) have attracted much attention in anti-counterfeiting, biosensing and bioimaging due to their characteristic property of emitting long persistent luminescence (PersL) after excitation ceases. However, most of...

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

“…1–3 Persistent luminescence (PersL) phosphors have attracted much attention in this area owing to their excellent optical features, such as excellent concealment, multiple colours, adjustable optical performance, and long emission lifetime. 4–6 They are widely used in many areas for helping protect individual economic interests, the safety of states, and the health of enterprises. 7,8 In recent decades, excitation wavelength dependent, photostimulated, multi-mode luminescence has been explored and proven to be effective for anti-counterfeiting.…”

“…These advancements have significantly enhanced the anti-counterfeiting performance of PersL phosphors. 2,9,10 However, most of the current PersL phosphors have the same PersL and photoluminescence (PL) colour. These characteristics of phosphors can be easily duplicated by substitutes, severely limiting their application prospects in anti-counterfeiting.…”