Patent ID: 8968470
Filing Date: 2015-03-03
Classification: C30B,Y10T

Abstract:
1. A graphite crucible for electromagnetic induction-based silicon melting, the crucible being formed of a graphite material and comprising a cylindrical body having an open upper part through which a silicon raw material is chargeable into the crucible, wherein an entirety of the cylindrical body comprises the graphite material, and an outer wall surround by an induction coil, wherein a plurality of slits are vertically formed through the outer wall and an inner wall of the crucible, the induction coil and the plurality of slits are configured to generate an electromagnetic force toward an inner center of the crucible to prevent a silicon melt from contacting the inner wall of the crucible, and to maintain a temperature at a bottom surface of the cylindrical body higher than a temperature at each slit of the plurality of slits.