Near-infrared(NIR)luminescence materials are ideal candidates for applications in three-dimensional biomedical imaging and night vision.Here,we constructed an ultra-broadband NIR material based on LiBaF3:Ni^(2+)single...Near-infrared(NIR)luminescence materials are ideal candidates for applications in three-dimensional biomedical imaging and night vision.Here,we constructed an ultra-broadband NIR material based on LiBaF3:Ni^(2+)single crystals with NIR emission at 1400 nm and a full width at half maximum(FWHM)of 254 nm from 1100 to 1700 nm wavelengths,covering the NIR-II and NIR-Ⅲ regions.Through the activation of inactive Mg^(2+),the NIR emission could be improved by a factor of two,and the FWHM enhanced to 273 nm.This is ascribed to the lattice distortion by the addition of Mg^(2+)as well as the charge asymmetry between the Mg^(2+)and Li+ions.The prepared Ni^(2+)/Mg^(2+)-doped NIR perovskite single crystals were packaged with a commercial high-efficiency near-ultraviolet LED chip(@395 nm)to construct NIR single-crystal LEDs,and their promising applications with high efficiency were demonstrated in NIR night-vision monitoring and vein non-destructive imaging.展开更多
基金supported by the National Natural Science Foundation of China(No.62275133)the Natural Science Foundation of Zhejiang Province(No.LY22E020002).
文摘Near-infrared(NIR)luminescence materials are ideal candidates for applications in three-dimensional biomedical imaging and night vision.Here,we constructed an ultra-broadband NIR material based on LiBaF3:Ni^(2+)single crystals with NIR emission at 1400 nm and a full width at half maximum(FWHM)of 254 nm from 1100 to 1700 nm wavelengths,covering the NIR-II and NIR-Ⅲ regions.Through the activation of inactive Mg^(2+),the NIR emission could be improved by a factor of two,and the FWHM enhanced to 273 nm.This is ascribed to the lattice distortion by the addition of Mg^(2+)as well as the charge asymmetry between the Mg^(2+)and Li+ions.The prepared Ni^(2+)/Mg^(2+)-doped NIR perovskite single crystals were packaged with a commercial high-efficiency near-ultraviolet LED chip(@395 nm)to construct NIR single-crystal LEDs,and their promising applications with high efficiency were demonstrated in NIR night-vision monitoring and vein non-destructive imaging.
