METHOD FOR MAKING PHOSPHOR PARTICLE

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PROBLEM TO BE SOLVED : To provide phosphor particles in which light-emitting efficiency is improved compared with the conventional ones, and a method for making the same. SOLUTION : The phosphor particles in the form of spherical polycrystal secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the composition : (AxByCz)3C5O12, wherein A is one or more kinds of rare earth elements selected from Y, Gd and Lu; B is one or more kinds of rare earth elements selected from Ce, Nd and Tb; C is one or more kinds of elements selected from Al and Ga; and x, y and z are positive numbers satisfying 0.002

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