Patent ID: 8558215
Filing Date: 2013-10-15
Classification: H01L

Abstract:
1. A light emitting device comprising: a first conductive semiconductor layer; an active layer adjacent to the first conductive semiconductor layer, the active layer including a first quantum well layer, a second quantum well layer and a barrier layer between the first quantum well layer and the second quantum well layer; and a second conductive semiconductor layer adjacent to the active layer, wherein the first quantum well layer includes a first plurality of sub-barrier layers and a first plurality of sub-quantum well layers, and the second quantum well layer includes a second plurality of sub-barrier layers and a second plurality of sub-quantum well layers, and wherein a bandgap of the first plurality of sub-barrier layers is different than a bandgap of the second plurality of sub-barrier layers, wherein the bandgap of the second plurality of sub-barrier layers is lower than a bandgap of the barrier layer, and wherein a bandgap of the second plurality of sub-quantum well layers is lower than the bandgap of the second plurality of sub-barrier layers.