METHOD FOR SUPPLYING RAW MATERIAL AND METHOD FOR PRODUCING SILICON MONOCRYSTAL

• Main Authors: YOKOYAMA Ryusuke, KAWAKAMI Rui, KANEHARA Takahiro
• Format: Patent
• Language: English; French; Japanese
• Published: 25.07.2019
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

This method for supplying a raw material comprises a solidification step for solidifying the surface of a silicon melt, a dropping step for dropping a solid raw material to a solidified portion formed in the solidification step, and a melting step for melting the solidified portion and the solid raw...