Large diameter silicon technology and epitaxy
The intermediate results of Super Silicon Crystal project are introduced to serve a production platform of 400 mm silicon. SSi has already installed a 400 mm CZ furnace. Raw materials are sufficiently applicable for 36 inch hot zone. We discuss a contact part between a crystal suspending system and a subsidiary cone. A successful handling system for a fragile quartz crucible and for a heavy silicon crystal is also described. A wire saw for 400 mm wafers has already been installed in SSi and sliced 400 mm wafers are demonstrated. For 400 mm epitaxial wafers, we describe pretreatment for epitaxial growth at low temperature.
heavy silicon crystals 400 mm silicon crystal crucible handling system