We extend the persistent luminescence into the ultraviolet spectral region by developing a new ultraviolet persistent phosphor Sr₂MgGe₂O₇:Pb²⁺. The Sr₂MgGe₂O₇:Pb²⁺ phosphor exhibits strong persistent luminescence peaking at 370 nm and a long persistence time of >12 h after excitation. The phosphor also exhibits a photo-stimulated persistent luminescence capability.