【 中文摘要 】本发明涉及一种含Mg氮化物荧光粉及其制备方法，该荧光粉用化学通式(Sr1‑y‑xMxRey)aMgbSic(N1‑δOδ)d表示，其中7≤a≤9、6≤b≤8、8≤c≤10、d＝(2a+2b+4c)/3、0≤x≤0.2、0＜y≤0.1、0≤δ≤0.005，M代表Ca、Ba、Mn、Zn、Cd中任意一种，Re代表Eu、Ce、Sm、Yb、Tb、Dy、Pr、Ho、Tm、Er中任意一种。本发明荧光粉中(Sr1‑xMx)aMgbSic(N1‑δOδ)d为基质，Re为发光中心，其半峰宽不大于80nm，属于窄带发射荧光粉，能和其他荧光粉有效搭配并应用于发光二极管、背光源，不仅可以减少通过滤色器后的发光量损失，而且也可以提高色纯度，实现更宽色域显示，还有望应用于超高色域液晶显示屏。

【 英文摘要 】The invention relates to Mg-containing nitride fluorescent powder and a preparation method thereof. The fluorescent powder is expressed by a chemical general formula (Sr1-y-xMxRey)a MgbSic(N1-delta Odelta)d, wherein a is greater than or equal to 7 and less than or equal to 9, b is greater than or equal to 6 and less than or equal to 8, c is greater than or equal to 8 and less than or equal to 10, d=(2a+2b+4c)/3, x is greater than or equal to 0 and less than or equal to 0.2, y is greater than 0 and less than or equal to 0.1, delta is greater than or equal to 0 and less than or equal to 0.005, Mrepresents any one of Ca, Ba, Mn, Zn and Cd, and Re represents any one of Eu, Ce, Sm, Yb, Tb, Dy, Pr, Ho, Tm and Er. The fluorescent powder provided by the invention takes the (Sr1-y-xMxRey)a MgbSic(N1-delta Odelta)d as matrix and Re as a luminescence center, and has a peak width at half height of not more than 80nm, thus belonging to narrow band emission fluorescent powder; the Mg-containing nitride fluorescent powder can be effectively collocated with other fluorescent powder as to be applied to light-emitting diodes and backlights, not only can reduce the luminous quantity loss after passing through a color filter, but also can improve the color purity, can realize wider color gamut display, and is also expected to be applied to super high color gamut liquid crystal display screens.

【 技术功效 】