Patent ID: 9153737
Filing Date: 2015-10-06
Classification: H01L,H01S,Y02E,Y02P

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: forming a first nitride semiconductor layer on a substrate; forming irregular pores in a surface of the first nitride semiconductor layer by etching the first nitride semiconductor layer using a process selected from the group consisting of reactive ion etching and dipping in a wet etching solution; forming a second nitride semiconductor layer on the first nitride semiconductor layer so as to cover the pores, wherein lateral crystal growth of the second nitride semiconductor layer completely fills the pores; and forming a semiconductor device structure on the second nitride semiconductor layer, wherein upper side surfaces of the pores in the first nitride semiconductor layer form a lateral crystal growth region for growth of the second nitride semiconductor layer, and wherein a portion of the second nitride semiconductor layer disposed in the pores is grown from the upper side surfaces of the pores.