Phosphor composition and method for producing the same, and light-emitting device using the same

摘要

A light-emitting device is produced using a phosphor composition containing a phosphor host having as a main component a composition represented by a composition formula: aM₃N₂.bAlN.cSi₃N₄, where "M" is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn, and "a", "b", and "c" are numerical values satisfying 0.2<=a/(a+b)<=0.95, 0.05<=b/(b+c)<=0.8, and 0.4<=c/(c+a)<=0.95. This enables a light-emitting device emitting white light and satisfying both a high color rendering property and a high luminous flux to be provided.