Abstract:
A semiconductor light emitting device includes a substrate, a first conductivity-type semiconductor base layer disposed on the substrate, a plurality of light emitting nanostructures, a transparent electrode layer, and a first electrode. The plurality of light emitting nanostructures are disposed to be spaced apart from one another on the first conductivity-type semiconductor base layer and include a first conductivity-type semiconductor core, an active layer, and a second conductivity-type semiconductor layer, respectively. The transparent electrode layer is disposed on the second conductivity-type semiconductor layer and between the plurality of light emitting nanostructures. The first electrode is electrically connected to the second conductivity-type semiconductor layer by penetrating the substrate.
Abstract:
A semiconductor light-emitting device includes a contact layer. The contact layer has the composition ratio of Al elements which varies gradually therein. A region formed by an Al element in the contact layer of the semiconductor light-emitting device may improve light extraction efficiency of the light emitted from an active layer and facilitate a formation of the reflective electrode.