Patent ID: 8575660
Filing Date: 2013-11-05
Classification: H01L

Abstract:
1. A group III-V semiconductor device comprising: at least one transition layer situated over a substrate; a first strain-relieving interlayer situated over said at least one transition layer and a second strain-relieving interlayer situated over said first strain-relieving interlayer; a first group III-V semiconductor body situated over said second strain-relieving interlayer, said first group III-V semiconductor body substantially thicker than said first and second strain-relieving interlayers; said first and second strain-relieving interlayers comprising different semiconductor materials so as to reduce a strain in said first group III-V semiconductor body; said first strain-relieving interlayer at least five times thicker than said second strain-relieving interlayer; said second strain-relieving interlayer being an aluminum nitride (AlN) layer.