PHOSPHOR, PRODUCTION METHOD OF THE SAME, AND LIGHT EMITTING DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide, e.g., a phosphor having the crystal structure represented by CaSiONwith further improved light emission properties that has high emission intensity and chemical and thermal stability even in the case where the phosphor is combined with an LED of 470 nm or less.SOLUTION: A phosphor is represented by the general formula CaEuSiONand has the same crystal structure as the crystal represented by CaSiON. The composition ratio is in the range satisfying the condition of 1.4≤x<2.0, 0.2≤y<0.6, 0