Patent ID: 7211822
Filing Date: 2007-05-01
Classification: B82Y,H01L,H01S

Abstract:
1. A nitride semiconductor device comprising an n-side semiconductor region comprising nitride semiconductor layers, a p-side semiconductor region comprising nitride semiconductor layers and an active layer of a nitride semiconductor between said n-side semiconductor region and said p-side semiconductor region, said active layer having an InGaN layer, wherein said n-side semiconductor region has an n-side super lattice layer comprising one or more first nitride semiconductor layers and one or more second nitride semiconductor layers each having a different composition from that of said first nitride semiconductor layers, each of said first nitride semiconductor layers and each of said second nitride semiconductor layers being laminated alternately, at least one of said first nitride semiconductor layers and said second nitride semiconductor layers having a thickness of not more than 100 angstroms, said first nitride semiconductor layers being made of In wherein said n-side super lattice layer is in contact with said active layer.