Bandgap Tailoring via Si Doping in Inverse-Garnet Mg₃Y₂Ge₃O₁₂:Ce³⁺ Persistent Phosphor Potentially Applicable in AC-LED

The state-of-the-art alternating-current light-emitting diode (AC-LED) technique suffers from adverse lighting flicker during each AC cycle. Aiming to compensate the dimming time of AC-LED, herein, we report a novel Mg3Y2(Ge1–xSix)3O12:Ce3+ inverse-garnet persistent phosphor whose afterglow is efficiently activated by blue light with persistent luminescence in millisecond range. It is experimentally demonstrated that Si doping tailors the host...