Preparation of yttrium-cerium-aluminum garnet phosphor

摘要

A yttrium-cerium-aluminum garnet phosphor is prepared by mixing yttrium, cerium and aluminum compounds to form a raw material in which the Ce concentration is 4-15 mol% based on the sum of Y and Ce, and a molar ratio of Al to the sum of Y and Ce is 5/3 to 5.5/3, granulating the raw material into particles with an average particle size of 5-100 µm, melting the particles in a high-temperature plasma, and heat treating the resulting particles in a non-oxidizing atmosphere for crystallization.