Patent ID: 8377802

Claim:
A method of forming a semiconductor structure comprising a III-V semiconductor layer, the method comprising: growing a III-V semiconductor layer, comprising: growing a first III-V semiconductor sublayer using a first set of growth conditions; and growing at least a second III-V semiconductor sublayer over the first III-V semiconductor sublayer using a second set of growth conditions different from the first set of growth conditions, the first III-V semiconductor sublayer and the at least a second III-V semiconductor sublayer forming the III-V semiconductor layer; forming the III-V semiconductor layer to have an average total thickness greater than a critical thickness of the first III-V semiconductor layer and less than a critical thickness of the second III-V semiconductor sublayer; and selecting the first set of growth conditions and the second set of growth conditions such that a net rate of incorporation of a group III element into a growth surface of the first III-V semiconductor sublayer is at least substantially equal to a net rate of incorporation of the group III element into a growth surface of the at least a second III-V semiconductor sublayer such that a composition of the III-V semiconductor layer is at least substantially constant across the average total thickness of the III-V semiconductor layer.