Patent ID: 6441393
Filing Date: 2002-08-27
Classification: H01L,H01S

Abstract:
A light emitting device comprising:a substrate; a buffer layer overlying said substrate, said buffer layer deposited at temperature about 500 C.; an n-doped III-V first contact nitride layer overlying said substrate and doped with a first dopant; an n-doped III-V stress reducing conductive second nitride layer overlying said first contact nitride layer and doped with a second dopant, said second dopant being different from said first dopant, said first dopant, said first dopant and said second dopant being selected from the group consisting of silicon, germanium, tin, or a combination thereof, and having a concentration between 1019 cmâˆ’3 and 1020 cmâˆ’3 in one of said first and second nitride layers, said second nitride layer having a thickness between 100 nanometers and 10,000 nanometers an active layer overlying said second nitride layer; and a p-doped III-V third nitride layer overlying said active layer, doped with at least one element selected from the group consisting of magnesium, beryllium, zinc, and cadmium.