| abstract |
A wavelength conversion material for a light emitting device is provided. A wavelength converting material for a light emitting device is AE3-x1-y + zRE3-x2 + yz [Si9-wAlw (N1-yCy) [4] (N16-z-wOz + w) [2]]: by Eux1, Cex2. Specified wavelength conversion material. (AE is Ca, Sr, Ba; RE = Y, Lu, La, Sc; 0 ≦ x1 ≦ 0.18; 0 ≦ x2 ≦ 0.2; x1 + x2> 0; 0 ≦ y ≦ 1; 0 ≦ z ≦ 3 ; 0 ≦ w ≦ 3) A wavelength conversion material having a cubic crystal structure and having an average effective ionic radius of AE + RE of 120 pm or less. [Selection] Figure 1 |