Strained layers within semiconductor buffer structures

Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction

Reexamination Certificate

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C257SE29193

Reexamination Certificate

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07825401

ABSTRACT:
A semiconductor workpiece including a substrate, a relaxed buffer layer including a graded portion formed on the substrate, and at least one strained transitional layer within the graded portion of the relaxed buffer layer and method of manufacturing the same. The at least one strained transitional layer reduces an amount of workpiece bow due to differential coefficient of thermal expansion (CTE) contraction of the relaxed buffer layer relative to CTE contraction of the substrate.

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