FLUORESCENT MATERIAL PARTICLES, METHOD FOR PRODUCING THE SAME, AND LIGHT EMITTING DEVICE

PROBLEM TO BE SOLVED: To provide a sulfide-based fluorescent material particle having excellent moisture resistance.SOLUTION: A fluorescent material particle includes a particle that contains a thiogallate phosphor represented by formula (Ia), and a first adherent member containing boron oxide and being disposed on the surface of the particle. In the formula (Ia): (M11-xM2x)Ga2-yS4-z, M1 is at least one element selected from Sr, Be, Mg, Ca, Ba and Zn; M2 is at least one element selected from Eu and Ce; 0.03≤x≤0.25; -0.2≤y≤0.2; -0.2≤z≤0.2.SELECTED DRAWING: None 【課題】耐湿性に優れる硫化物系の蛍光体粒子を提供する。【解決手段】式（Ｉａ）で表されるチオガレート蛍光体を含む粒子と、前記粒子の表面に配置される酸化ホウ素を含む第一の付着物と、を備える蛍光体粒子。（Ｍ１１−ｘＭ２ｘ）Ｇａ２−ｙＳ４−ｚ（Ｉａ）（Ｍ１はＳｒ、Ｂｅ、Ｍｇ、Ｃａ、Ｂａ又はＺｎから選択される１種以上の元素；Ｍ２はＥｕ又はＣｅから選択される１種以上の元素；０．０３≦ｘ≦０．２５；−０．２≦ｙ≦０．２；−０．２≦ｚ≦０．２）【選択図】なし