Patent ID: 8637895

Claim:
A semiconductor light emitting device, comprising: a first conductive type semiconductor layer; an active layer disposed on the first conductive type semiconductor layer; a second conductive type semiconductor layer including a first semiconductor layer disposed on the active layer and a second semiconductor layer disposed on the first semiconductor layer; a third semiconductor layer disposed between the first semiconductor layer and the second semiconductor layer; a first electrode electrically connected to the first conductive type semiconductor layer; and a second electrode electrically connected to the second conductive type semiconductor layer, wherein the third semiconductor layer is physically contacted with an lower surface of the second semiconductor layer, wherein the third semiconductor layer has a P-type dopant concentration less than that of the first and second semiconductor layers, and wherein the third semiconductor layer has a hole concentration of about 5×10 18 /cm 3 or less and has a greater resistivity than that of the first semiconductor layer.