Patent ID: 6693307
Filing Date: 2004-02-17
Classification: H01L

Abstract:
A semiconductor light emitting element comprising:a substrate; a first cladding layer formed on top surface of said substrate, said first cladding layer being made of n-type GaN; an active layer formed on said first cladding layer, wherein said active layer emits light having a wavelength longer than 364 nm; a second cladding layer formed on said active layer, said second cladding layer being made of p-type GaN, and an overflow-preventing layer formed between said active layer and said second cladding layer, said overflow-preventing layer being made of AlGaN; said active layer being made of a nitride compound semiconductor which contains In (indium), Ga (gallium), N (nitrogen) and B(boron), and having an energy gap smaller than that of GaN, said active layer emitting light by band-to-band recombination, wherein a composition ratio of said In in said active layer is equal to or greater than 45%.