Mn2+ activated green emitting SrAL12O19 luminiscent material
 A SrAl.sub.12 O.sub.19 green luminescent material is doped with Mn.sup.2+ activator ions and at least one trivalent rare earth sensitizer ion species. Preferably, the material contains four rare earth ions: Ce.sup.3+, Pr.sup.3+, Gd.sup.3+ and Tb.sup.3+. Optionally, a portion of the aluminum may be substituted with magnesium. The material may be used as a display device or lamp phosphor or as an X-ray diagnostic or laser scintillator. 
General Electric Company
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William Winder Holly Ann Douglas Allen Alok Mani
Beers Comanzo Doughty Srivastava