LIGHT-EMITTING DEVICE HAVING AN MGO PYRAMID STRUCTURE AND MANUFACTURING METHOD FOR SAME

摘要

The present invention relates to a light-emitting device having a gallium nitride-based group III-V compound semiconductor and a manufacturing method for same. The light-emitting device having a gallium nitride-based group III-V compound semiconductor comprises: a substrate; a p-type ohmic electrode layer formed on the substrate; a p-type gallium nitride-based group III-V compound semiconductor layer formed on the p-type ohmic electrode layer; an n-type gallium nitride-based group III-V compound semiconductor layer formed on the p-type gallium nitride-based group III-V compound semiconductor layer; an n-type ohmic electrode layer formed on the n-type gallium nitride-based group III-V compound semiconductor layer; and first and second refractive index control layers which have refractive indices less than those of the n-type gallium nitride-based group III-V compound semiconductor layer and the n-type ohmic electrode layer, and the pyramid structure is formed on the surface of the second refractive index control layer. According to one embodiment of the present invention, the first and second refractive index control layers can be included in the upper portion of the light-emitting device having a gallium nitride-based group III-V compound semiconductor, and the pyramid structure can be formed in the second refractive index control layer, thereby increasing the surface light outputted by one and half times more than that of typical light-emitting diodes.