Memc Electronic Materials, Inc.

Corner Star Limited

Gianni Dell'Amico

Stephan Haringer

Mauro Diodà

Marco Zardoni

Giorgio Agostini

Giancarlo Zago

Renzo Odorizzi

Ugo Delpero

A system for growing silicon crystal structures includes a housing defining a growth chamber and a feed system connected to the housing for delivering silicon particles to the growth chamber. The feed system includes a container for holding the silicon particles. The container includes an outlet for discharging the silicon particles. The feed system also includes a channel connected to the outlet such that silicon particles discharged from the container flow through the channel. The feed system further includes a separation valve 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.

Feed system for crystal pulling systems

A dopant feeding device for releasing dopant into a feeder system during doping of a crystal growing system includes a dopant container for holding the dopant, a lower valve, and an upper valve. The dopant container includes a wall defining a lower opening for releasing the dopant therethrough. The lower valve is positioned adjacent to the lower opening and is movable between a closed position that is in contact with the wall to prevent passage of dopant through the lower opening and an open position that is spaced from the lower opening to allow passage of dopant therethrough. The upper valve is positioned above and connected to the lower valve. The upper valve is disposed within the dopant container and is movable between a first position that is spaced from the dopant container and a second position that is in contact with the dopant container.

Dopant feeding device for dispensing dopant

Growing community of inventors

Merano, Italy

Gianni Dell'Amico