Patent ID: 8656860
Filing Date: 2014-02-25
Classification: C23C,C30B

Abstract:
1. A depletion mode reactor for depositing a chemical on a first surface of a plurality of wafers simultaneously according to a chemical vapor deposition process, said reactor comprising: a reversible first port positioned on a first side of a first surface of a wafer and providing the supply or exhaust of a chemical; a plurality of first baffle channels, each of said first baffle channels coupled to said first port and through each of which a chemical may flow to a wafer insert pocket; a plurality of vertically stacked susceptor plates, each comprising a wafer insert pocket exposing a first surface of a wafer to said chemical, each of said wafer insert pockets being coupled to a first baffle channel and a second baffle channel, said vertically stacked susceptor plates providing a flow path for said chemical across a first surface of each of said wafers; a plurality of second baffle channels, each of said second baffle channels coupled to a second reversible port and through each of which a chemical may flow to said wafer insert pocket; and a reversible second port positioned on a second side of a first surface of a wafer and providing the supply or exhaust of a chemical; said reversible ports, said baffle channels, and said plurality of vertically stacked susceptor plates providing a chemical flow path; wherein said first reversible port and said reversible second port are capable of operating in either a supply mode or an exhaust mode to alternate the flow of chemical across said first surface of said wafer.