Patent ID: 9214788
Filing Date: 2015-12-15
Classification: B82Y,H01L,H01S

Abstract:
1. A semiconductor light emitting element comprising: an n-type layer containing a group III nitride semiconductor, an active layer, and a p-type layer, wherein the n-type layer includes a semiconductor superlattice layer which is a stack of superlattice layers, the semiconductor superlattice layer having a structure in which group III nitride semiconductors A and group III nitride semiconductors B are alternately stacked, each of the group III nitride semiconductors A and each of the group III nitride semiconductors B being stacked in each of the superlattice layers, a relationship Eg (A) >Eg (B) holds, where Eg (A) denotes a band gap of the group III nitride semiconductor A, and Eg (B) denotes a band gap of the group III nitride semiconductor B, the group III nitride semiconductor A is a film containing AlInN, and the film contains oxygen (O) at a concentration of at least 1 ×10 the group III nitride semiconductor A has a film thickness of at most 5 nm, a current is injected in a stacking direction of the superlattice layers, and in the semiconductor superlattice layer, a stack of the group III nitride semiconductor A and the group III nitride semiconductor B is repeatedly disposed at a period shorter than 5 nm.