Patent ID: 8323994
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. A method for producing a Group III nitride semiconductor light-emitting device with a face-up configuration, the light-emitting device including a p-type layer, a transparent electrode comprising an oxide and formed on the p-type layer, a p-pad electrode comprising Ni/Au and formed on the transparent electrode and on a surface side of the light-emitting device, and an n-electrode comprising Ni/Au and formed on the surface side of the light-emitting device, the method comprising: simultaneously forming the p-pad electrode and the n-electrode; and forming a high resistance region in the transparent electrode immediately below the p-pad electrode by a heat treatment at 500° C. to 650° C. in an oxygen atmosphere under a reduced pressure after said forming the p-pad electrode and the n-electrode, wherein the high resistance region has a contact resistance to the p-type layer higher than a contact resistance to the p-type layer of a region other than the high resistance region in the transparent electrode such that light is not emitted in a region of an active layer below the p-pad electrode, and the transparent electrode comprises an indium oxide-based material.