Patent ID: 7148519
Filing Date: 2006-12-12
Classification: H01L

Abstract:
1. A GaN LED structure, comprising: a substrate made of a material selected from the group consisting of sapphire, 6H—SiC, 4H—SiC, Si, ZnO, GaAs, MgAl a double buffer layer, located on top of said substrate, further comprising: an n-type GaN layer, located on top of said double buffer layer; a short period superlattice contacting layer, located on top of said n-type GaN layer, further comprising: an active layer, made of InGaN, located on top of said short period superlattice contacting layer; a p-type shielding layer, made of Mg-doped Al a contacting layer, made of p-type Mg-doped Al