A New Yttrium Oxysulfide-Based Multispectral IR Phosphor Activated with Nd3+ and Yb3+ Ions

摘要

We have identified the main general trends of variations in the spectral and kinetic properties of the Nd3+ and Yb3+ IR luminescence bands in (Y0.99-xNd0.01Ybx)(2)O2S solid solutions under excitation at wavelengths of 0.810 and 0.940 mu m. Using these results, we have developed the first multispectral IR phosphors with various relative intensities of the IR luminescence bands in the ranges 0.88-0.94, 0.94-1.06, 1.06-1.12, and 1.35-1.42 mu m under excitation with 0.810-mu m light and bright IR luminescence in the range 0.94-1.06 mu m under excitation with 0.940-mu m light.