SILICATE PHOSPHOR EXHIBITING HIGH LIGHT EMISSION CHARACTERISTICS AND MOISTURE RESISTANCE, AND LIGHT EMITTING DEVICE

摘要

A coated silicate phosphor having a fluorine-containing compound coating layer on the surface thereof exhibits high light emitting intensity, high moisture resistance, and is obtained by a method wherein a mixture containing an amount of ammonium fluoride in the range of 0.5-15 parts by mass relative to 100 parts by mass of silicate phosphor is heated at a temperature of 200-600?.