METHOD FOR MANUFACTURING HIGHLY PURE SILICON

METHOD FOR MANUFACTURING HIGHLY PURE SILICON

Provided are: a method for manufacturing highly pure silicon by unidirectional solidification of molten silicon, that can inexpensively and industrially easily manufacture highly pure silicon that has a low oxygen concentration and low carbon concentration and is suitable for applications such as ma...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KONDO, JIRO, ONOUE, KOZO, KISHIDA, YUTAKA, HIYOSHI, MASATAKA, TOKUMARU, SHINJI, DOHNOMAE, HITOSHI, NAKAZAWA, SHIGERU
Format: Patent
Sprache:eng ; pol
Schlagworte:
AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE
APPARATUS THEREFOR
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS THEREOF
CRYSTAL GROWTH
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
REFINING BY ZONE-MELTING OF MATERIAL
SEMICONDUCTOR DEVICES
SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE
SINGLE-CRYSTAL-GROWTH
UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:Provided are: a method for manufacturing highly pure silicon by unidirectional solidification of molten silicon, that can inexpensively and industrially easily manufacture highly pure silicon that has a low oxygen concentration and low carbon concentration and is suitable for applications such as manufacturing solar cells; highly pure silicon obtained by this method; and silicon raw material for manufacturing highly pure silicon. A method for manufacturing highly pure silicon using molten silicon containing 100 to 1000 ppmw of carbon and 0.5 to 2000 ppmw of germanium as the raw material when manufacturing highly pure silicon by unidirectionally solidifying molten silicon raw material in a casting container, the highly pure silicon obtained by this method, and the silicon raw material for manufacturing the highly pure silicon.