Short-wave infrared (SWIR) light sources featuring large spectral bandwidth and high luminescence efficiency have found wide applications in the fields of night vision, non-destructive detection, covert information identification, and biomedical...

Photostimulated luminescence (PSL) materials have attracted considerable attention in many important fields, varying from radiation dosimetry and biomedical imaging to security encryption and optical data storage. Nevertheless, monochromatic light illumination...

Based on the homology principle in advanced pharmaceutical chemistry, a new high efficiency and low toxicity collector, O-butyl S-(1-chloroethyl)carbonodithioate, was designed.

Narrowband ultraviolet-B (NB-UVB) luminescent materials are characterized by high photon energy, narrow spectral width, and visible-blind emission, thus holding great promise for photochemistry and photomedicine. However, most NB-UVB phosphors developed so far are photoluminescent, where continuous external excitation is needed. Herein, we realize NB-UVB persistent luminescence (PersL) in an indoor-lighting environment by exploiting the interaction between self-trapped/defecttrapped excitons and Gd 3+ emitters in ScPO 4 . The phosphor shows a self-luminescing feature with a peak maximum at 313 nm with a time duration of >24 h after ceasing Xray irradiation, which can be clearly imaged by an UVB camera in a bright environment. Spectroscopic and theoretical approaches reveal that thermo-and photo-stimulations of energies trapped at intrinsic lattice defects followed by energy transfer to Gd 3+ emitters account for the emergence of the afterglow. The present results can initiate more exploration of NB-UVB PersL phosphors for emerging applications in secret optical tagging and phototherapy.