Patent ID: 7161188
Filing Date: 2007-01-09
Classification: B82Y,G02B,H01L

Abstract:
1. A III–V nitride semiconductor light emitting element comprising: an active layer made of a semiconductor and generating light; a first semiconductor layer of a first conductivity type on a principal surface of the active layer; and a second semiconductor layer of a second conductivity type provided on a back surface of the active layer and having a back surface with a two-dimensional periodic structure, the semiconductor light emitting element outputting light generated in the active layer from the back surface of the second semiconductor layer, wherein, when a period of the two-dimensional periodic structure is Λ, a peak wavelength of the light generated in the active layer is λ, and a refractive index of the first semiconductor layer is N, and 0.63λ/N<Λ<8.8λ/N is satisfied.