Patent ID: 7663138

Claim:
A nitride semiconductor light emitting element, comprising: a substrate; and an n-type GaN layer, an undoped InGaN layer, a multiquantum well active layer comprising a lowest InGaN barrier layer and a plurality of pairs of InGaN well/InGaN barrier layers, and a p-type layer adjoining the multiquantum well active layer, laminated on the substrate in this order from the substrate, wherein only the undoped InGaN layer is interposed as a semiconductor layer between the n-type GaN layer and the multiquantum well active layer, the undoped InGaN layer having an In composition ratio in a range of 0.04 to 0.1, wherein a composition of the InGaN barrier layers of the multiquantum well active layer is expressed by In x Ga 1-x N (0.04×0.1), and a total thickness of the InGaN layers having an In composition ratio in a range of 0.04 to 0.1 in the light emitting element including the InGaN barrier layers is not greater than 60 nm, wherein the In composition ratio of the undoped InGaN layer is identical to an In composition ratio of the InGaN barrier layers, and wherein a thickness of each of the InGaN barrier layers is in a range of 5 to 20 nm.