Efficient broadband NIR-II luminescence in a perovskite-like LiMgSbO:Ni phosphor for spectroscopy applications.

Phosphors with emission in the second near-infrared (NIR) bio-window (1000 nm-1700 nm) have promising applications in bio-imaging, food quality analysis, and nondestructive examination. However, developing an efficient NIR phosphor in this emission range is a significant challenge. Herein, we report a perovskite-like LiMgSbO:Ni phosphor, which exhibits a broadband NIR emission peaking at 1380 nm and a full width at half maximum (FWHM) of 281 nm under near-ultraviolet 395 nm excitation.