Patent ID: 7807489
Filing Date: 2010-10-05
Classification: B82Y,H01S,Y10S

Abstract:
1. A method to form a semiconductor light-emitting device, comprising steps of: growing a stack of semiconductor layers on a semiconductor substrate, said semiconductor layers including a lower cladding layer, an active layer, and an upper cladding layer in this order, at least one of said lower cladding layer and said upper cladding layer being doped with zinc to show a p-type conduction, said active layer containing aluminum, forming a mesa by etching said stack to expose said substrate; selectively etching said active layer to form recessed portions in both sides of said active layer; forming protection layers so as to fill said recessed portions, said protection layers being doped with silicon; and burying said mesa by growing a first layer, a second layer and a third layer, at least one of said first to third layers being doped with zinc to show said p-type conduction.