Mn2+ activated green emitting SrAl12O19 luminescent 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 laster scintillator. 
General Electric Company
H H C C C C G C C
H01J H01J C09K C09K C09K C09K G21K C09K C09K
inventional inventional inventional inventional inventional inventional additional inventional inventional
Holly Ann Alok Mani Douglas Allen William Winder
Comanzo Srivastava Doughty Beers