| abstract |
The present invention provides a fluorescent powder, a method for producing the same, and a light emitting element having the same. Wherein the fluorescent powder comprises an inorganic compound and the composition of the inorganic compound includes at least M element, A element, D element and R element, wherein M element is Lu, La, Pr, Nd, Sm, Y, Tb And Gd, and it necessarily contains Lu; The element A is Si and / or Ge; The D element is one or two elements selected from the group consisting of O, N and F and necessarily contains N; The R element is Ce and / or Dy. Since the ion radius of Lu 3 + is smaller than the ion radius of La 3 + , when the Lu element is contained in the inorganic compound, the original ligand position can be contracted, and in order to reduce the crystal lattice distortion due to the contraction of the ligand position, The ligand position adjacent thereto is expanded and the original crystal field environment is weakened, so that its photo-color performance can be smoothly adjusted according to demand, and its thermal stability is comparatively good. |