A novel Li+-doped MgLuGaO4 phosphor with stable white-light emission and long persistent luminescence

In recent years, white persistent luminescence materials have received extensive attention due to the potential application of white light in the field of plant growth lighting. The white persistent luminescence materials synthesized by traditional methods either have strict requirements on the concentration of doped ions or cannot produce white light continuously and stably due to different decay rates of various emission centers, which limits their further application. In our work, we successfully synthesized a novel Li+-doped MgLuGaO4 phosphor with stable white-light emission and long persistent luminescence. The broadband emission of MgLuGaO4:Li+ is mainly located at 350–650 nm, which has no change at different decay time, showing stable white-light emission. The persistent luminescence intensity is increased by 3.8 times and the persistent luminescence time is extended from 24 h to more than 36 h by doping Li+ ions. Stable white-light and long persistent luminescence emission make it promising to be used in plant growth lighting.