Europium-activated barium magnesium aluminate phosphor

摘要

A europium-activated barium aluminate phosphor is described wherein the phosphor is doped with tetravalent ions of Hf, Zr, or Si. Preferably, the phosphor is represented by (Ba1-xEux)MgAl10O17: (Hf, Zr, Si)y where 0.05<=x<=0.25 and 0<y<=0.05. The tetravalent dopant ions are shown to enhance the stability of the phosphor in UV/VUV applications.