Patent ID: 8143647
Filing Date: 2012-03-27
Classification: H01L,H01S

Abstract:
1. A relaxed Aluminum-Gallium-Nitride (AlGaN) template for optoelectronic device comprising: a base structure having a substantially planar surface, the base structure consisting essentially of one selected from a group including Silicon and Silicon Carbide; a nucleation layer disposed on the planar surface of the base structure, the nucleation layer consisting of a plurality of crystal grains, each crystal grain having a base attached to the planar surface and a peak end disposed away from the planar surface, wherein each of the plurality of crystal grains comprises of one of Aluminum-Gallium-Nitride (InGaN) and GaN; and a buffer layer disposed on the nucleation layer, the buffer layer consisting essentially of a single crystal AlGaN structure having a thickness that is greater than 500 nm; and a wetting layer disposed between the base structure and the buffer layer.