Patent ID: 6153894
Filing Date: 2000-11-28
Classification: B82Y,H01L,H01S

Abstract:
A group-III nitride semiconductor light-emitting device which takes a pn-junction type double hetero (DH) junction structure which comprises an n-type cladding layer and a p-type cladding layer formed on one surface of a single crystal substrate, and a light-emitting layer made of a group-III nitride semiconductor crystal layer provided between the n and p-type cladding layers, wherein the light-emitting layer includes a super lattice structure in which n-type group-III nitride semiconductor crystal layers disposed closer to the n-type cladding layer are alternately stacked repeatingly, the n-type group-III nitride semiconductor crystal layers having different composition ratios of a group-III constituent element and approximately the same thickness and the stacking cycle number ranging from two pairs to twenty five pairs; and an active layer made of an n-type group-III nitride semiconductor crystal layer provided on a layer as an upper end layer which is located at an end of the super lattice structure closer to the p-type cladding layer, the n-type group-III nitride semiconductor crystal layer having a non-rectangular potential structure due to a bend of a band.