Dual-Emission-Center Strategy in Ca3Ga4O9:Er3+/Sm3+ Enables Color-Tunable Afterglow for Multimodal Luminescent Encryption Materials

Materials exhibiting long-persistent luminescence (LPL) in the visible spectrum hold pivotal importance for anti-counterfeiting and encryption. Nevertheless, conventional LPL materials typically only exhibit single-color afterglow emission. This constraint makes it...