Highly efficient near-infrared solid solution phosphors with excellent thermal stability and tunable spectra for pc-LED light sources toward NIR spectroscopy applications

We develop NIR-emitting Gd 1− x Lu x (Al 1− x Sc x ) 3 (BO 3 ) 4 :0.01Cr 3+ phosphors with a high IQE of 93.6%, broadened FWHM of 196 nm and zero-thermal-quenching. These phosphors can be used in the field of supplementary lighting of PSB photosynthesis.