SEMICONDUCTOR LIGHT EMITTING ELEMENT, GROUP III NITRIDE SEMICONDUCTOR SUBSTRATE AND METHOD FOR MANU

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An object of the present invention is to obtain, with respect to a semiconductor light-emitting element using a group III nitride semiconductor substrate, a semiconductor light-emitting element having an excellent light extraction property by selecting a specific substrate dopant and controlling the concentration thereof. The semiconductor light-emitting element comprises a substrate composed of a group III nitride semiconductor comprising germanium (Ge) as a dopant, an n-type semiconductor layer composed of a group III nitride semiconductor formed on the substrate, an active layer composed of a group III nitride semiconductor formed on the n-type semiconductor layer, and a p-type semiconductor layer composed of a group III nitride semiconductor formed on the active layer in which the substrate has a germanium (Ge) concentration of 2 x 1017 to 2 x 1019 cm-3. The substrate is produced in a nitrogen-containing atmosphere using a melt comprising at least a group III element, an alkali or alkaline earth metal, and germanium (Ge) and nitrogen.