Structure and Luminescent Properties of SrSi2N2O2 Co-Doped Yb2+ and Nd3+ Phosphor by Hydrothermal Synthesis Process

The luminescence properties of Yb³⁺ and Nd³⁺-activated strontium-silicon-oxynitrides have been studied by hydrothermal synthesis process. The X-ray diffraction (XRD) measurement, absorption spectrum, and photoluminescence spectrum of the powder phosphors were presented. It absorbs light efficiently in the blue region (450 nm~500 nm), that shows a single intense broadband emission at 570 nm. Then SrSi₂N₂O₂ is a good host material for green-yellow phosphors (570 nm), combines with blue LED light (470 nm) that it stimulates in the phosphor to generate a whitish light.