Patent ID: 8003418
Filing Date: 2011-08-23
Classification: H01L

Abstract:
1. A method for producing a Group III nitride-based compound semiconductor light-emitting device, the method comprising: a layer stacking step of forming an n-type layer, a light-emitting layer or an active layer, and a p-type layer sequentially on an epitaxial growth substrate formed of a hetero-substrate; a bonding step of forming a conductive layer on a surface of the p-type layer, to thereby bond the p-type layer to a conductive support substrate; a growth substrate removal step of removing the epitaxial growth substrate by decomposing at least a portion of the n-type layer through laser irradiation; and a pretreatment and electrode formation step of forming an electrode on the exposed n-type layer, wherein the pretreatment and electrode formation step comprises: a plasma silicon doping step of doping a surface of the n-type layer with silicon by applying, to the n-type layer surface, a plasma of a silicon-containing compound formed through application of a high-frequency electric power to the conductive substrate; a contact electrode formation step of forming, on the n-type layer surface, a contact electrode comprising at least one selected from a group consisting of vanadium, chromium, tungsten, nickel, platinum, niobium, and iron; and an alloying step of alloying the n-type layer and the contact electrode through thermal treatment at 100° C. to 350° C.