Patent ID: 8552455
Filing Date: 2013-10-08
Classification: H01L

Abstract:
1. A semiconductor light emitting diode comprising: a semiconductor layer; and an ohmic electrode comprising a nanodot layer, a contact layer, an anti-diffusion layer, and a capping layer disposed on the semiconductor layer, wherein the nanodot layer is disposed on an N-face of the semiconductor layer and comprises at least one of Ag, Al and Au, the contact layer comprises at least one material selected from among Ti, Ti—Al alloys, Ti—Ni alloys, Ta, Al, W, and W—Ti alloys, the anti-diffusion layer comprises at least one metal layer selected from Cr, Ru, Pt, Ni, Pd, Ir, Rh, and Nb layers, or at least one oxide layer selected from among RuOx, NiOx, IrOx, RhOx, NbOx, TiOx, TaOx, and CrOx layers, and the capping layer comprises at least one of Au and Al.