Patent ID: 9556380
Date: 2017-01-31
CPC Classifications: C09K,G21K

Claim:
1. A fluorescent material having a composition formula represented as (Gd 1-α-β-γ L α Ce β Tb γ ) 3+a (Al 1-u-v Ga u Sc v ) 5-b O 12 (L is at least one element selected from Y and Lu), where a, b, α, β, γ, u and v satisfy the following ranges: wherein a, b, α, β, γ, u and v satisfy the following ranges: 0<a≦0.07, 0<b≦0.07, 0<α≦0.15, 0.0003≦β≦0.004, 0.03≦γ≦0.15, 0.35≦u≦0.70, and 0≦v≦0.02.