METHOD FOR PRODUCING FLUORIDE PHOSPHOR

Japanese Patent JP2018012813

A

PROBLEM TO BE SOLVED: To provide a method for producing a fluoride phosphor excellent in light emitting properties, especially internal quantum efficiency and to provide a fluoride phosphor for providing a light emitting device having excellent light emitting efficiency.SOLUTION: There is provided a method for producing a fluoride phosphor comprising a crystal phase represented by the following formula [1], which comprises a step of adding a second solution containing at least K and F to a first solution containing at least Mn, K, Si and F, wherein the content of K in the second solution is 2.05 or more and 3.20 or less to 1 mol of Si contained in the first solution. MnKSiF[1] (wherein, m, a, b and c each independently represent a value satisfying the following expressions: 0