Patent ID: 9570657
Date: 2017-02-14
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: an n-side layer including a first n-type sublayer having a first silicon concentration; a strain release layer formed on the first n-type sublayer of the n-side layer and having a second silicon concentration; an active layer formed on the strain release layer and including a plurality of quantum well layers and a plurality of quantum barrier layers; an interface region between the strain release layer and the active layer, the interface region having a third silicon concentration; and a p-type layer formed on the active layer, wherein the first silicon concentration of the first n-type sublayer of the n-side layer is higher than the second silicon concentration of the strain release layer, the third silicon concentration of the interface region is higher than the second silicon concentration of the strain release layer, and the third silicon concentration of the interface region is higher than a silicon concentration of the plurality of quantum well layers and the plurality of quantum barrier layers.