Concentration‐Driven Energy‐Bridge Synergistic Sensitized High‐Efficiency Rare‐Earth NIR Emitters Enable Colorful High‐Fidelity Hyperspectral Imaging

ABSTRACT Hyperspectral imaging (HSI) combines imaging and spectroscopy for diverse applications in agriculture, industry, and medicine. However, current broadband and visible light based HSI systems suffer from limited spectral range, poor environment‐resistant capabilities and severe emission overlap. Here, we propose a innovative HSI approach based on narrow‐band near‐infrared (NIR, 900–1700 nm) rare‐earth luminescent materials. First, through concentration triggered multi‐site synergistic sensitization strategy, we developed high‐efficiency narrow‐band NIR emitters, LaZnGa 11 O 19 : (RE = Yb, Er, Nd, Tm and Ho), achieving FWHM of 28 nm and 50% external quantum efficiency. Subsequently, we integrated as‐developed emitters with HSI technology to construct a novel narrow‐band NIR‐enhanced HSI system. Compared to wide‐band emitters, its theoretical signal isolation in dual‐channel mode significantly improved from 1.84 dB and 0.14 dB to 14.62 dB and 9.08 dB, effectively extending the spectral range of imaging systems while avoiding signal crosstalk between multiple wavelength signals. Furthermore, when applied to real‐world image information scenarios, the as‐constructed system achieves isolation of 11.8 dB (channel to background) and 10.2 dB (channel‐to‐channel) close to theoretical values, demonstrating the feasibility of narrow‐band NIR‐enhanced HSI approach. These results provide unique ideas and inspirations for the design of high‐performance NIR luminescent materials as well as advanced imaging applications.