Patent ID: 6738175
Filing Date: 2004-05-18
Classification: B82Y,H01L,H01S

Abstract:
A light emitting device having an n-type semiconductor layer, a p-type semiconductor layer and an active layer between the n-type semiconductor layer and the p-type semiconductor layer,wherein the active layer comprises a well layer made of Inx1Ga1âˆ’x1N and a first barrier layer made of Aly2Ga1âˆ’y2N formed on the well layer, said x1 being set to be not less than 0.6, said y2 being set to be not less than 0.15, wherein said active layer comprises a second barrier layer made of Inx3Aly3Ga1âˆ’x3âˆ’y3N, (0 x3 0.3, 0 y3 0.1, x3+y3 0.3) and said well layer is formed on said second barrier layer.