“…Regulation of luminescence performance of corresponding optical materials truly matters for their applications in a broad range of fields, such as highly efficient phosphor-converted white light-emitting diodes (WLEDs), − high-density optical data storage devices, , and optical sensing . The establishment of an energy transfer process, − modulation of the host matrix, development of new, efficient, and stable phosphors, − along with the exploration of WLED structures, , are continuously devoted to achieve improved luminescence performance of corresponding phosphors and advanced lighting and display devices. Moreover, persistent energy transfer, , controlled traps associated with tailoring of the trap density, and tuning of trap depth distributions , enable versatile application of optical storage materials for multicolor anti-counterfeiting, optical information storage, and autofluorescence-free optical imaging technology .…”