LATTICE MATCHING LAYER FOR USE IN A MULTILAYER SUBSTRATE STRUCTURE
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United States of America Patent
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Issued Date -
Dec 19, 2013
app pub date -
Mar 11, 2013
filing date -
Jun 14, 2012
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Abstract
A lattice matching layer for use in a multilayer substrate structure comprises a lattice matching layer. The lattice matching layer includes a first chemical element and a second chemical element. Each of the first and second chemical elements has a hexagonal close-packed structure at room temperature that transforms to a body-centered cubic structure at an α-β phase transition temperature higher than the room temperature. The hexagonal close-packed structure of the first chemical element has a first lattice parameter. The hexagonal close-packed structure of the second chemical element has a second lattice parameter. The second chemical element is miscible with the first chemical element to form an alloy with a hexagonal close-packed structure at the room temperature. A lattice constant of the alloy is approximately equal to a lattice constant of a member of group III-V compound semiconductors.
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