Red light emitting long afterglow photoluminescence phosphor and afterglow lamp thereof

摘要

A red light emitting afterglow photoluminescence phosphor is a rare earth oxysulfide phosphor activated by Europium, which chemical formula is as follows:wherein Ln is at least one selected from the group consisting of Y, La, Gd and Lu; M is a coactivator which is at least one selected from the group consisting of Mg, Ti, Nb, Ta and Ga in the chemical formula.