CPC H01L 33/504 (2013.01) [C09K 11/7708 (2013.01); C09K 11/77744 (2021.01)] | 17 Claims |
1. A light emitting device comprising:
a light source; and
a luminescent material, the luminescent material, comprising:
RE3Ga5−x−yAxSiO14:Cry (RE=La, Nd, Gd, Yb, Tm; A=Al, Sc), where 0≤x≤1 and 0.005≤y≤0.1;
a host lattice crystallizing in a trigonal calcium gallogermanate structure type; and
dopants disposed in the host lattice, the dopants comprising:
trivalent chromium; and
tetravalent chromium in a concentration that is less than 1% of a total concentration of all chromium in the luminescent material.
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