Manufacturing and processing method for improving seed crystal defects of germanium single crystal
A processing method, germanium single crystal technology, applied in the field of manufacturing and processing to improve germanium single crystal seed crystal defects, can solve problems such as limiting the growth length of single crystal single ingots, limiting production efficiency, and decreasing the tensile strength of finished seed crystals, achieving Reduce seed crystal dislocation density and internal defects, ensure crystal orientation accuracy, and reduce the effect of machining process
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] In the process of pulling a single crystal, directly according to the self-improved patented seed chuck size and required size to pull a suitable small-sized single crystal as the seed crystal material: 1. Control the size of the single crystal in the equal diameter process Draw 18cm-20cm at φ (18.5-20) mm; 2. Increase the pulling speed through more detailed manual control, keep the seed rotation (crystal rotation) 8rpm, and the crucibl...
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