Patent ID: 9577143
Date: 2017-02-21
CPC Classifications: C23C,C30B,H01L

Claim:
1. An epitaxial growth system comprising: a growth reactor; a growth liner having an entrance and an exit at each end of the growth liner; a substrate holder; a source zone; a backflow liner having an entrance and an exit at each end of the backflow liner, the exit of the backflow liner comprising a predominately rectangular or oblong cross-section; a backflow liner source; and a reactor exhaust; the backflow liner having an axis substantially aligned with an axis of the growth liner; the entrance of the backflow liner being coupled to the backflow liner source and the exit of the backflow liner being oblique to the axis of the backflow liner, wherein the exit of the growth liner having a flow directing wall larger than the exit of the backflow liner; the oblique exit of the backflow liner being disposed adjacent to the flow directing wall of the growth liner exit, such that the oblique exit of the backflow liner and the flow directing wall of the growth liner exit being separated by a gap to directly face each other, whereby two counter-flowing gas streams from each of the backflow liner and the growth liner are combined and directed toward the reactor exhaust through the gap; the substrate holder being mounted within the growth reactor for movement between a position within the growth liner to a position within the backflow liner while holding at least one substrate.