Small particle terbium activated yttrium gadolinium borate phosphors and method of making

摘要

Small particle yttrium, gadolinium, terbium and cerium borate phosphors are produced by thermal decomposition of gels or solutions or powders containing yttrium, gadolinium, terbium and cerium salts and an organic precursor such as trimethyl borate or boric acid at a temperature below the normal temperature of solid state reaction. The phosphor of the present invention has the empirical formula:(Y1-x-y-zGdxTbyCez)BO3wherein: 0.0/=x/=0.2, 0.01/=y/=0.1, and 0.0/=z/=0.1.