Patent ID: 7822088
Filing Date: 2010-10-26
Classification: B82Y,H01L,H01S

Abstract:
1. A nitride semiconductor light emitting device comprising: an n-type nitride semiconductor layer disposed over a substrate; an active layer disposed over the n-type nitride semiconductor layer and emitting light having a prescribed wavelength; a multi-layered p-type clad layer disposed over the active layer and, in order to enclose a carrier and light within the active layer, made up of at least two layers of a first p-type clad layer doped with a p-type impurity containing at least Al an n-type ohmic electrode to be electrically connected to the n-type nitride semiconductor layer; and a p-type ohmic electrode to be electrically connected to the multi-layered p-type clad layer, wherein the second p-type clad layer contains the p-type impurity in a higher concentration than the first p-type clad layer in a range of 1×10 the p-type ohmic electrode is formed at least in contact over the second p-type clad layer.