Patent ID: 8093579
Filing Date: 2012-01-10
Classification: B82Y,H01L,H01S

Abstract:
1. A semiconductor chip comprising a p-doped region having a cladding layer and a contact layer, a first interlayer and a second interlayer being arranged between the cladding layer and the contact layer, and wherein a concentration y of a first material component within the first and the second interlayer changes such that a band gap within the first and the second interlayer varies in a range lying between a band gap of the cladding layer and the band gap of the contact layer, the cladding layer, the first interlayer, the second interlayer and the contact layer each containing a respective compound semiconductor material, a composition of the each respective compound being in accordance with the relationship: wherein B is a first material component, E is a second material component, C is a third material component and A is a fourth material component; wherein the concentration y of the first material component within the first interlayer decreases in an order proceeding from the cladding layer towards the second interlayer and the concentration y of the first material component within the second interlayer decreases in an order proceeding from the first interlayer towards the contact layer; and wherein the concentration y of the first material component starts in the second interlayer at a value that is higher than a final value of the concentration y in the first interlayer.