Patent ID: 8164084
Filing Date: 2012-04-24
Classification: H01L

Abstract:
1. A light-emitting device, comprising: an electrically conductive permanent substrate; an adhesive layer on the electrically conductive permanent substrate; an epitaxial structure on the adhesive layer connected with the electrically conductive permanent substrate by the adhesive layer, wherein the epitaxial structure comprises: a lower cladding layer, wherein the material of the lower cladding layer comprises AlInN; an active layer on the lower cladding layer, wherein the material of the active layer comprises InGaN or AlGaInN; and an upper cladding layer on the active layer, wherein the material of the upper cladding layer comprises AlInN; a tunneling structure on the epitaxial structure, comprising a first conductivity type semiconductor layer comprising AlInN with a first doping concentration greater than 6×10 a second conductivity type semiconductor layer comprising AlInN with a second doping concentration greater than 6×10 a current spreading layer on the tunneling structure.