Abstract
The luminescent materials MAl2O4:Eu2+,TR3+ (M = Ca, Sr, Ba), (TR = Nd3+,Dy3+) belongs to the class of the alkaline earths aluminates doped with rare earth ions, they present persistent luminescent properties, emitting light for several hours after removed the excitation source. This phosphors display low chemical stability when in contact with water. It results in the total suppression of…