Patent ID: 6203622
Filing Date: 2001-03-20
Classification: C23C,H01L

Abstract:
An apparatus for processing semiconductor wafers at elevated temperatures comprising:a susceptor formed of at least two independent sections to be positioned in a high temperature processing chamber for supporting a wafer to be processed;said susceptor including a substantially disc-shaped lower section and a substantially disc-shaped upper section having a lower surface in engagement with an upper surface of said lower section;the engaging surfaces of said sections defining one or more gas channels therebetween;a plurality of gas inlets in said lower section opening to its lower surface and said channels;one or more gas outlets in said upper section opening to the upper surface of said upper section in an area beneath that in which a wafer to be processed is to be positioned, said outlets being open to said channels and thus connected to said inlets;whereby when a wafer is placed on the susceptor and a gas is supplied through said plurality of gas inlets to said one or more gas channels and out said one or more gas outlets a flow of gas is provided under the water and out around the outer edge of the wafer; anda shaft in communication with the susceptor for rotating said shaft together with said susceptor.