Patent ID: 7615804
Filing Date: 2009-11-10
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, wherein said p-side semiconductor region has a p-side contact layer on which a p-electrode is to be formed, the p-side contact layer having a thickness of not more than 500 angstroms, 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 different composition and different n-type impurity concentration from that of said first nitride semiconductor layers and 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 or said second nitride semiconductor layers having a thickness of not more than 100 angstroms.