Super-wide-range Tunable Emission across NIR-Ⅱ and NIR-Ⅲ Achieved by B-site Cation Co-substitution in Ni2+ doped Double Perovskites Suitable for NIR Light Source

Long-wavelength (1000-2500 nm) near-infrared (LWNIR) phosphors present important application prospect in biomedical and nondestructive testing. A huge challenge for current researchers is to obtain phosphors with super-wide emission across NIR-II...