Crystal structure and optical performance analysis of a new type of persistent luminescence material with multi-functional application prospects

Persistent luminescence (PersL) materials, as environmentally friendly and energy-saving materials, have broad application prospects in many fields such as lighting, chemistry and even biomedicine. However, studies on the types, performances and mechanism of PersL materials are still insufficient, which significantly restricts their development and application. Under this consideration, we successfully synthesized a yellow PersL material CaSrGa4O8 (CSG). The crystal structure was studied in detail through Rotation Electron Diffraction (RED) and Powder X-ray Diffraction (PXRD). What’s more, by co-doping Mn2+ and Yb3+, the afterglow brightness of CSG could be increased by nearly 20 times, and the afterglow duration could reach more than 6 h. It is worth mentioning that the samples also have excellent performances in mechanical luminescence (ML), photostimulated luminescence (PSL) and cathodoluminescence (CL), which was also investigated systematically. Finally, an anti-counterfeiting label was designed by the samples to reveal the potential of their application in anti-counterfeiting. The results showed that our research not only provided a new candidate PersL material for multifunctional applications, but also gave good help for studying the physical and chemical properties of CSG.