Patent ID: 6849862
Filing Date: 2005-02-01
Classification: B82Y,C30B,H01L,Y02E

Abstract:
1. A compound semiconductor device, comprising: a substrate; a first high temperature n-type III-V compound layer having a first band gap grown directly on said substrate, wherein said high temperature n-type III-V compound layer is grown at a temperature greater than 900° C. using HVPE techniques, wherein a low temperature buffer layer is not interposed between said substrate and said high temperature n-type III-V compound layer; a second n-type III-V compound layer having a second band gap grown on said first high temperature n-type III-V compound layer using HVPE techniques, wherein said first band gap is wider than said second band gap; a first p-type III-V compound layer having a third band gap grown on said second n-type III-V compound layer using HVPE techniques; a second p-type III-V compound layer having a fourth band gap grown on said first p-type III-V compound layer using HVPE techniques, wherein said fourth band gap is wider than said third band gap; and a non-continuous quantum dot layer comprised of a plurality of Al