Patent ID: 11888089
Assignee: NICHIA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A light emitting element comprising:
an n-side nitride semiconductor layer;
an active layer disposed on the n-side nitride semiconductor layer and comprising a plurality of nitride semiconductor well layers and a plurality of nitride semiconductor barrier layers, wherein the active layer is configured to emit ultraviolet light; and
a p-side nitride semiconductor layer disposed on the active layer, wherein:
at least one of the plurality of barrier layers comprises, successively from an n-side nitride semiconductor layer side:
a first barrier layer comprising Al and Ga, and
a second barrier layer disposed in contact with the first barrier layer, comprising Al, Ga, and In, and having a smaller band gap energy than the first barrier layer,

at least one of the plurality of well layers is disposed in contact with the second barrier layer and has a smaller band gap energy than the second barrier layer, and
a thickness of at least one of the second barrier layers is greater than a thickness of at least one of the well layers.