Method of producing a plate-shaped structure, in particular, from silicon, use of said method and plate-shaped structure thus produced, in particular from silicon
First Claim
1. A method for fabricating a silicon wafer, which method comprises:
- depositing at least one intermediate layer on either of a substrate and/or a superstrate by chemical vapor deposition, wherein the intermediate layer is deposited as a glass comprising at least one base material having distributed therein extrinsic atoms or molecules which differ from those of the base material;
assembling the substrate and the superstrate so that the as-deposited intermediate layer is interposed between the substrate and the superstrate to form a silicon wafer structure; and
applying a heat treatment to the resulting structure in a temperature range that causes the intermediate layer to become spongy and plastically deformable with the as-deposited extrinsic atoms or molecules in the base material causing an irreversible formation of microbubbles or microcavities in the intermediate layer resulting from the heat treatment in a configuration and amount which weakens the intermediate layer.
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Accused Products
Abstract
Method for fabricating a structure in the form of a plate, and structure in the form of a plate, in particular formed from silicon, including at least one substrate, a superstrate and at least one intermediate layer interposed between the substrate and the superstrate, in which the intermediate layer comprises at least one base material having distributed therein atoms or molecules termed extrinsic atoms or molecules which differ from the atoms or molecules of the base material, and in which a heat treatment is applied to said plate so that, in the temperature range of said heat treatment, the intermediate layer is plastically deformable and the presence of the selected extrinsic atoms or molecules in the selected base material causes the irreversible formation of micro-bubbles or micro-cavities in the intermediate layer.
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Citations
20 Claims
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1. A method for fabricating a silicon wafer, which method comprises:
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depositing at least one intermediate layer on either of a substrate and/or a superstrate by chemical vapor deposition, wherein the intermediate layer is deposited as a glass comprising at least one base material having distributed therein extrinsic atoms or molecules which differ from those of the base material; assembling the substrate and the superstrate so that the as-deposited intermediate layer is interposed between the substrate and the superstrate to form a silicon wafer structure; and applying a heat treatment to the resulting structure in a temperature range that causes the intermediate layer to become spongy and plastically deformable with the as-deposited extrinsic atoms or molecules in the base material causing an irreversible formation of microbubbles or microcavities in the intermediate layer resulting from the heat treatment in a configuration and amount which weakens the intermediate layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification