“The latest research progress shows that Sb3+/Ln3+co doped Cs2NaYCl6 lead-free perovskite materials have been successfully prepared by hydrothermal method. Through the measurement of excitation, emission spectra, and fluorescence attenuation curves, their luminescence properties and energy transfer mechanism were discussed. The experimental results show that the material can achieve broadband modulation luminescence from ultraviolet to near-infrared region under ultraviolet excitation, and the near-infrared emission band covers 800-1600 nm, providing a solution for night vision imaging system light sources.”