Ce,Pr-coactivated Strontium Magnesium Aluminate Phosphor and Lamp Containing Same

摘要

A Sr(Al,Mg)₁₂O₁₉:Ce,Pr phosphor is described wherein the phosphor has an increased sensitivity to excitation by 185 nm radiation compared to a Sr(Al,Mg)₁₂O₁₉:Ce phosphor. The Ce,Pr-coativated strontium magnesium aluminate phosphor emits ultraviolet (UV) radiation at about 306 nm in the UVB region. Suntan lamps made with this phosphor exhibit improved performance over lamps made with a commercial Sr(Al,Mg)₁₂O₁₉:Ce phosphor.