Red light fluorescent material and manufacturing method thereof, and white light luminescent device

Abstract

A red-light-emitting fluorescent material, suitable for being excited by a first light to emit red light, is provided. The red-light-emitting fluorescent material is characterized in the chemical formula (1): A3B2C3(MO4)8:Eu3+  (1) wherein, A represents Li, Na, K, Rb, Cs or Ag; B represents Mg, Ca, Sr or Ba; C represents Y, Gd or La; M represents Mo, W or combination of Mo and W (MoxW(1-x)). The red-light-emitting fluorescent material has high luminance and good color purity. In addition, since the composition of the red-light-emitting fluorescent material is oxide, the red-light-emitting fluorescent material has advantages of good chemical stability and long lifetime.

Dependencies are inferred from the claim text.