Facilitating Near‐Infrared Persistent Luminescence in Cr3+‐Doped Gadolinium Gallium Garnets

-doped gadolinium gallium garnets. These findings confirm the applicability of MASS-based bandgap and defect level engineering for improving the PersL properties in non/inferior-PersL materials. This burgeoning MASS method may facilitate a wide range of PersL materials for various emerging applications.