Disclosed are a fluorescent
glass ceramic material and a light-emitting device containing the same. The fluorescent
glass ceramic material is composed of
glass ceramic materials and fluorescent
powder, wherein the glass
ceramic materials are SiO2, Al2O3, B2O3 and
alkali metal oxides (Na2O and K2O) or
divalent metal oxides (CaO, SrO, BaO and ZnO); the fluorescent
powder has a molecular formula of LnMRbNyCez, wherein Ln is one or two from La, Lu, Gd and Y, R is one or two from Si and G, 2<=m<=4, 5<=b<=7, 10.5<=y<=11.5, and 0<z<=0.5. The fluorescent glass
ceramic material can be excited efficiently by
ultraviolet light,
near ultraviolet light and
blue light, and the main emitting peak of the fluorescent glass
ceramic material is positioned at 520-550 nm. The fluorescent glass ceramic materialcan not only avoid the problems of degradation and yellowing caused by traditional fluorescent
powder packaging manners, but also further improve the
thermal stability of existing fluorescent glass
ceramic materials; the light-emitting device containing the fluorescent glass ceramic material can be widely applied to the field of high-density energy excitation lighting and display.