FEED SYSTEM FOR CRYSTAL PULLING SYSTEMS

• Main Authors: ODORIZZI, RENZO, DELL'AMICO, GIANNI, HARINGER, STEPHAN, ZAGO, GIANCARLO, ZARDONI, MARCO, AGOSTINI, GIORGIO
• Format: Patent
• Language: English
• Published: 24.01.2022
• 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

A system for growing silicon crystal structures includes a housing (102) defining a growth chamber (104) and a feed system (112) connected to the housing for delivering silicon particles to the growth chamber. The feed system includes a container (114) for holding the silicon particles. The container includes an outlet for discharging the silicon particles. The feed system also includes a channel (168) connected to the outlet such that silicon particles discharged from the container flow through the channel. The feed system further includes a separation valve (122) connected to the channel and to the housing. The separation valve is configured such that a portion of the feed system rotates relative to the housing. (Fig. 3)