Silicon single crystal and process for producing it
AssigneeWacker Siltronic AG
InventorsDirk Dantz, Wilfried Von Ammon, Dirk Zemke, Franz Segieth
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Abstract
A silicon single crystal which has been produced using the Czochralski method has a <113 > orientation.
Claims7
A silicon single crystal produced using the Czochralski method and having a <113> orientation.
A process for producing a silicon single crystal with a <113> orientation, comprising
- pulling the silicon single crystal using a Czochralski method in the form of an ingot which is suspended from a dash seed and has two conical end pieces, and
- one of said conical end pieces is connected to the dash seed.
In a method for the production of semiconductor wafers which are selected from a group which includes semiconductor wafers with one or two polished side faces, semiconductor wafers with an epitaxial coating, semiconductor wafers which have been subjected to a heat treatment and semiconductor wafers which have been coated in some other way, the improvement which comprises
- utilizing the silicon single crystal as claimed in claim for said production.
Dependencies are inferred from the claim text.