Patent ID: 7872269

Claim:
A gallium nitride semiconductor light emitting element, which includes at least an n type semiconductor layer, a light emitting region and a p type semiconductor layer, in listed order, on a substrate, which has an interface between an AlGaN semiconductor layer and a GaN semiconductor layer, the AlGaN semiconductor layer formed at the p type semiconductor layer side and containing Mg of 10 19 cm −3 or less, and the GaN semiconductor layer is positioned closer to the n layer than the AlGaN semiconductor layer is, wherein the AlGaN semiconductor layer is a p type electron block layer, a p type clad layer is formed on the p type electron block layer, and from the n type semiconductor layer to the p type clad layer, the growth face is not formed to have any one of nitrogen polarity or Ga polarity of GaN, but is formed in a non-polar direction.