Low dislocation density III-nitride semiconductor component
First Claim
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1. A semiconductor component comprising:
- a substrate;
a nucleation layer situated over said substrate;
a III-Nitride intermediate stack situated over said nucleation layer;
a III-Nitride buffer layer situated over said III-Nitride intermediate stack;
a III-Nitride device fabricated over said III-Nitride buffer layer;
wherein said III-Nitride intermediate stack comprises a protrusion propagation body situated over a transition body, said protrusion propagation body including a protrusion inducing layer, a protrusion generating layer, a plurality of protrusion spreading multilayers, and a plurality of protrusions originating from said protrusion generating layer and propagating into said protrusion spreading multilayers, wherein said protrusions propagate laterally in a direction normal to said substrate from a lower layer of said protrusion spreading multilayers to a layer of said protrusion spreading multilayers above the lower layer so that said protrusions are wider and shallower at said upper layer as compared to at said lower layer.
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Abstract
There are disclosed herein various implementations of a semiconductor component including a protrusion propagation body. The semiconductor component includes a substrate, a III-Nitride intermediate stack including the protrusion propagation body situated over the substrate, a III-Nitride buffer layer situated over the group III-V intermediate stack, and a III-Nitride device fabricated over the group III-V buffer layer. The protrusion propagation body includes at least a protrusion generating layer and two or more protrusion spreading multilayers.
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13 Claims
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1. A semiconductor component comprising:
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a substrate; a nucleation layer situated over said substrate; a III-Nitride intermediate stack situated over said nucleation layer; a III-Nitride buffer layer situated over said III-Nitride intermediate stack; a III-Nitride device fabricated over said III-Nitride buffer layer; wherein said III-Nitride intermediate stack comprises a protrusion propagation body situated over a transition body, said protrusion propagation body including a protrusion inducing layer, a protrusion generating layer, a plurality of protrusion spreading multilayers, and a plurality of protrusions originating from said protrusion generating layer and propagating into said protrusion spreading multilayers, wherein said protrusions propagate laterally in a direction normal to said substrate from a lower layer of said protrusion spreading multilayers to a layer of said protrusion spreading multilayers above the lower layer so that said protrusions are wider and shallower at said upper layer as compared to at said lower layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification