Patent ID: 9099586
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A nitride semiconductor light-emitting element comprising: a substrate; an n-type nitride semiconductor layer and a p-type nitride semiconductor layer provided on said substrate; and a buffer layer and an active layer provided between said n-type nitride semiconductor layer and said p-type nitride semiconductor layer, wherein said buffer layer has plural first buffer layers, each of which is independently expressed by an equation of In In compositions x1 of said plural first buffer layers are changed in said buffer layer, the In composition x1 of at least one layer of said plural first buffer layers is lower than an In composition of said active layer, the In composition x1 of at least one other layer of said plural first buffer layers is higher than an In composition of said active layer, and an effective bandgap of said buffer layer, in a region that the In composition x1 of at least one layer of said plural first buffer layers is higher than an In composition of said active layer, is larger than an effective bandgap of said active layer.