Patent ID: 11990561

Abstract:
A nitride-based semiconductor light-emitting element includes: a substrate that is an example of a n-type nitride-based semiconductor including a group IV n-type impurity; and an n-side electrode in contact with the substrate. The substrate includes: a surface layer region in contact with the n-side electrode and including a halogen element; and an internal region located across the surface layer region from the n-side electrode. A peak concentration of the group IV n-type impurity in the surface layer region is at least 1.0×1021 cm−3. A peak concentration of the halogen element in the surface layer region is at least 10% of the peak concentration of the group IV n-type impurity in the surface layer region. A concentration of the group IV n-type impurity in the internal region is lower than a concentration of the group IV n-type impurity in the surface layer region.