Patent ID: 8164250
Filing Date: 2012-04-24
Classification: C04B,C09K,H01L

Abstract:
1. A light emitting device comprising: a substrate layer of Al a first light conversion layer located on said substrate layer and having a doping material, said substrate layer being of a different material as compared to said first light conversion layer: wherein said first light conversion layer is doped at doping levels of ≦3 mol-% and ≧0.05 mol-%: and wherein said first light conversion layer has a thickness of ≧10 nm and ≦30 nm; wherein said first light conversion layer and said substrate layer have collateral edges which are matched; wherein the first light conversion layer comprises a polycrystalline ceramic layer of YAG doped with Ce, wherein a refractive index n wherein the light conversion layer is positioned on the substrate layer by sintering, and wherein a color temperature of the LED is adjustable by abrasion of the light conversion layer.