Phosphor composition and light emitting device package having the same

Abstract

Disclosed are a phosphor composition and a light emitting apparatus including the same. The phosphor composition has a compositional formula of A z C x O 12 :RE, wherein the z is 0≦z≦3, the x is 0≦x≦5, the A includes at least one selected from the group consisting of Y, Sc, Gd and Lu, the C includes at least one selected from the group consisting of B, Al and Ga, and the RE includes at least one selected from the group consisting of Eu, Ce, Sm, Yb, Dy, Gd, Tm and Lu. The light emitting apparatus includes the phosphor composition.

What is claimed is: 
     
         1 . A phosphor composition having a compositional formula of A z C x O 12 :RE, wherein the z is 0≦z≦3 and the x is 0≦x≦5,
 the A includes at least one selected from the group consisting of Y, Sc, Gd and Lu, 
 the C includes at least one selected from the group consisting of B, Al and Ga, and 
 the RE includes at least one selected from the group consisting of Eu, Ce, Sm, Yb, Dy, Gd, Tm and Lu. 
 
     
     
         2 . The phosphor composition of  claim 1 , wherein the A is the Y. 
     
     
         3 . The phosphor composition of  claim 2 , wherein, in the compositional formula of A z C x O 12 :RE, the A z C x  includes Y 3 (B 5-x Al x ). 
     
     
         4 . The phosphor composition of  claim 1 , wherein the A includes the Y and the Gd. 
     
     
         5 . The phosphor composition of  claim 4 , wherein, in the compositional formula of A z C x O 12 :RE, the A z  includes Gd 3-y-z Y y . 
     
     
         6 . The phosphor composition of  claim 5 , wherein, in the compositional formula of A z C x O 12 :RE, the A z  includes Gd 3-y-z Y y . 
     
     
         7 . The phosphor composition of  claim 4 , wherein the C x  is B 5 . 
     
     
         8 . The phosphor composition of  claim 1 , wherein the C includes B and Al. 
     
     
         9 . The phosphor composition of  claim 8 , wherein the C x  is (B, Al) 5 . 
     
     
         10 . The phosphor composition of  claim 1 , wherein the compositional formula of A z C x O 12 :RE includes a compositional formula of (Y, Gd) 3-x (B,A1) 5 O 12 :Ce, and wherein the z is 0.1≦z≦0.3. 
     
     
         11 . The phosphor composition of  claim 1 , wherein the RE is Ce v ,
 wherein the composition(v) of the Ce v  is 0.1≦z≦0.3.   
     
     
         12 . The phosphor composition of  claim 1 , wherein the phosphor composition includes a compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce, wherein
 the z is 0.1≦z≦0.3, and   the phosphor composition has a light emission wavelength in a range of 559 nm to 567 nm with respect to an excitation wavelength in a range of 420 nm to 500 nm.   
     
     
         13 . A phosphor composition having a compositional formula of A 3-x C 5 O 12 :RE z ,
 wherein the z is 0≦z≦0.5,   the A includes at least one selected from the group consisting of Y, Sc, Gd and Lu,   the C includes at least one selected from the group consisting of B, Al and Ga,   the RE includes at least one selected from the group consisting of Eu, Ce, Sm, Yb, Dy, Gd, Tm and Lu,   the compositional formula of A 3-x C 5 O 12 :RE z  includes a compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce z , and   the phosphor composition emits yellow light.   
     
     
         14 . The phosphor composition of  claim 13 , wherein, in the compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce z , the z is 0.1≦z≦0.3. 
     
     
         15 . The phosphor composition of  claim 14 , wherein in the compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce z , the z of the Ce z  is 0.2. 
     
     
         16 . A light emitting device package comprising:
 a body;   first and second electrode layers on the body;   a light emitting chip electrically connected to the first and second electrode layers; and   a molding member including a phosphor composition on the light emitting chip,   wherein the phosphor composition has a compositional formula of A z C x O 12 :RE, and   wherein the z is 0≦z≦3 and the x is 0≦x≦5,   the A includes at least one selected from the group consisting of Y, Sc, Gd and Lu,   the C includes at least one selected from the group consisting of B (Boron), Al and Ga,   the RE is at least one selected from the group consisting of Eu, Ce, Sm, Yb, Dy, Gd, Tm and Lu, and   the phosphor composition emits yellow light.   
     
     
         17 . The light emitting device package of  claim 16 , wherein the light emitting chip includes a UV LED chip. 
     
     
         18 . The light emitting device package of  claim 16 , wherein the light emitting chip includes a blue LED chip. 
     
     
         19 . The light emitting device package of  claim 16 , wherein the compositional formula of A z C x O 12 :RE includes a compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce, and wherein the z is 0.1≦z≦0.3. 
     
     
         20 . The light emitting device package of  claim 19 , wherein the compositional formula of A z C x O 12 :RE includes a compositional formula of (Y, Gd) 3-z (B,Al) 5 O 12 :Ce, and wherein the z is 0.1≦z≦0.3.