Patent ID: 8053756
Filing Date: 2011-11-08
Classification: H01L

Abstract:
1. A nitride semiconductor light emitting element with a structure in which an active layer is sandwiched between a p-type nitride semiconductor layer and an n-type nitride semiconductor layer, the active layer having a quantum well structure with a well layer and a barrier layer made of a nitride containing In, the nitride semiconductor light emitting element wherein: a first undoped InGaN layer and a second undoped InGaN layer with an In content different from that of the first undoped InGaN layer are formed between the p-type nitride semiconductor layer and the well layer of the active layer disposed at a position closest to the p-type side; an In composition ratio of the first undoped InGaN layer is uniform throughout the entire thickness and smaller than an In composition ratio of the barrier layer; and a total film thickness of the first undoped InGaN layer and the second undoped InGaN layer is 20 nm or less.