GREEN EMITTING LUMINESCENT MATERIALS

摘要

The invention relates to improved green light emitting materials of the formula Me(La _1-a-b-c-d Y _a Gd _b Lu _c Tb _d )(Mo _1-x W _x ) ₂ O₈, (La _1-a-b-c-d Y _a Gd _b Lu _c Tb _d ) 2 (Mo _1-x W_x ) ₂O₉ and (La _1-a-b-c-d Y _a Gd _b Lu _c Tb _d ) ₂ (Mo _1-x W _x )₃O₁₂. These materials have a high lumen equivalent, a fast decay, and a high conversion efficiency which makes them useful for lighting purposes.