LIGHT-EMITTING MATERIAL EMITTING IN THREE PRIMARY COLORS, ITS MANUFACTURING METHOD AND LIGHT EMITTING-DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a LuVO4light-emitting material capable of causing a parent material to emit in the primary blue, red and yellow colors without changing the type of the parent material, its manufacturing method and a light-emitting device using it. SOLUTION: The material consists of a LuVO4light-emitting material mixed with an activator and is produced by forming portions without the activator mixed and spots of oxide powders of the Dy and Eu activating elements dissolved in a solvent, on a substrate rod of LuVO4obtained by sintering, melting the sintered material in a solidification furnace and growing crystals by the floating method. The material serves as a light-emitting material for light-emitting devices: the portions without the activator mixed emit in the primary blue color, the portions with the Dy activating agent mixed do in the primary red color, and the portions with the Eu activating agent do in the primary yellow color. COPYRIGHT: (C)2005,JPO&NCIPI