Patent ID: 8766293

Claim:
A light-emitting device comprising: a first cladding layer made of a first-type semiconductor material; a light-emitting layer disposed on said first cladding layer to emit light when supplied with external electricity; a second cladding layer disposed on said light-emitting layer oppositely of said first cladding layer, and made of a second-type semiconductor material which has an electrical property opposite to that of said first-type semiconductor material; an epitaxial structure including an indium-containing oxide, and formed on said second cladding layer oppositely of said light-emitting layer; a transparent conductive layer made of a material different from that of said epitaxial structure, and disposed to overlay said epitaxial structure; and an electrode unit for supplying the external electricity, including a first electrode disposed to be electrically connected to said first cladding layer, and a second electrode disposed on said transparent conductive layer to be electrically connected to said second cladding layer through said epitaxial structure and said transparent conductive layer such that the external electricity is permitted to be transmitted to said light-emitting layer through said first and second electrodes; wherein said indium-containing oxide is In y Ga 1-y O where 0<y<1; and wherein each of said first and second cladding layers and said light-emitting layer is made of a gallium nitride based material.