PHOSPHOR PARTICLE AND LIGHT-EMITTING DIODE

文件类型：PDF文档
文件大小：311K
PROBLEM TO BE SOLVED : To provide phosphor particles whose phosphor purity is more improved, and which improves absorbance of excitation light in a material such as a resin dispersed with the phosphor particles such as the encapsulating resin of a light emitting body used for a light-emitting diode and an inorganic glass, and in which separation between the phosphor particles and encapsulating material is suppressed even in use for a long period of time, and a light-emitting diode using the phosphor particles. SOLUTION : The phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having compositional formula : (A1-xBx)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 satisfies 0.002≤x≤0.2, the secondary particles having an average particle size of 5 to 50 μm. COPYRIGHT : (C)2012, JPO&INPIT