Patent ID: 6666993
Filing Date: 2003-12-23
Classification: C09K,H01J

Abstract:
A method for producing a single-component calcium halophosphate phosphor having an CRI of at least 69 which comprises the steps of:(a) combining a source of phosphate, a source of calcium, a source of fluoride, a source of chloride, a source of manganese, and a source of antimony materials, wherein the said materials are combined in a metals-to-phosphate (Ca+Mn) ratio of about 9.890 (based on six phosphate ions), and the moles of the materials, based on six phosphate ions, are about 0.142 manganese, about 0.904 calcium, about 0.146 chloride, and about 0.062 antimony, respectively; (b) firing the mixture of combined materials at a temperature to form a friable calcium halophosphate phosphor activated with antimony and manganese.