Patent ID: 8470627
Filing Date: 2013-06-25
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor light emitting device, the device including: the method comprising: forming a first buffer layer made of a crystalline AIN on a first substrate, forming a second buffer layer made of a crystalline Al stacking the n-type semiconductor layer, the light emitting unit, and the p-type semiconductor layer on the GaN layer; and separating the first substrate, wherein the p-type semiconductor layer includes a first p-type layer provided on the light emitting unit and a p-type contact layer provided on the first p-type layer, and the first p-type layer is Mg-doped p-type AlGaN formed to have a concentration profile including a higher Mg concentration on a side of the light emitting unit and a lower Mg concentration on a side opposite to the light emitting unit, so that a piezoelectric field in the first p-type layer is canceled by the concentration profile.