The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2024
Filed:
Jun. 03, 2020
Freiberger Compound Materials Gmbh, Freiberg, DE;
Stefan Eichler, Dresden, DE;
Michael Rosch, Freiberg, DE;
Dmitry Suptel, Dresden, DE;
Ulrich Kretzer, Chemnitz, DE;
Berndt Weinert, Freiberg, DE;
Freiberger Compound Materials GMBH, Freiberger, DE;
Abstract
A device (′″) for manufacturing III-V-crystals and wafers () manufactured therefrom, which are free of residual stress and dislocations, from melt () of a raw material optionally supplemented by lattice hardening dopants comprises a crucible (′″) for receiving the melt () having a first section (″) including a first cross-sectional area and a second section (′) for receiving a seed crystal () and having a second cross-sectional area, wherein the second cross-sectional area is smaller than the first cross-sectional area and the first and second sections are connected with each other directly or via third section (′) which tapers from the first section towards the second section, in order to allow a crystallization starting from the seed crystal () within the directed temperature field (T) into the solidifying melt. The first section (″) of the crucible (′″) has a central axis (M), and the second section (′) is arranged being offset (v) with regard to the central axis (M) of the first section (″).