Novel Ca 8 Mg 3 AlGaSi 7 O 28 :Eu 2+ ,Ce 3+ phosphor with blue emitting and persistent green luminescence for emergency lighting

Ca 8 Mg 3 AlGaSi 7 O 28 :Eu 2+ ,Ce 3+ phosphors exhibit blue photoluminescence and yellowish-green persistence. Ce 3+ concentration controls emission color, combining persistent and photo-stimulated luminescence with tunability for lighting and anti-counterfeiting.