The effect of Nd3+-doped phosphor-in-glass on WLED

The utilization of light-emitting diode (LED) lighting has gained prominence as the primary source of illumination in recent years. Phosphors in glass (PiG) have become the most suitable fluorescent materials for LED lighting due to their low sintering temperature and simple preparation process. Most of the light sources used in daily life are Ce3+-doped Yttrium Aluminum Garnet (YAG:Ce3+) yellow phosphor, which cause the correlated color temperature (CCT) to be above 6000 K due to the lack of red emission, resulting in serious blue light pollution. Red phosphor is expensive at present, and the effect of introducing red component into glass is weak. In this experiment, we introduced Nd3+ into the glass of the 60P2O5–10B2O3–10ZnO–20SnO system, and then sintered the glass with YAG:Ce3+ phosphor to prepare PiG of Nd3+ glass mixed YAG:Ce (PiG:Nd3+). Under the excitation of 450 nm blue light, the correlated color temperature (CCT) of PiG:6 wt%Nd3+ decreased by 144 K and the color rendering index (CRI) increased by 4.9 compared with PiG:0 wt%Nd3+.