Patent ID: 8299490
Filing Date: 2012-10-30
Classification: H01L,H01S

Abstract:
1. A nitride-based semiconductor device, comprising: a nitride-based semiconductor multilayer structure including a p-type semiconductor region, a surface of the p-type semiconductor region being an m-plane; and an electrode that is arranged on the p-type semiconductor region, wherein the p-type semiconductor region is made of an Al x In y Ga z N semiconductor (where x+y+z=1, x≧0, y≧0, and z≧0), and the electrode includes an Mg layer which is in contact with the surface of the p-type semiconductor region and an Ag layer which is provided on the Mg layer, and a contact resistance of the electrode arranged on the m-plane and annealed at a temperature of 500° C. to 700° C. is less than 1.0×10