Patent ID: 8545940
Filing Date: 2013-10-01
Classification: C23C,H01L,Y10T

Abstract:
1. A method of depositing a reactant on a substrate in a reaction space, the reaction space comprising an upstream periphery and a downstream periphery, the method comprising a plurality of atomic layer deposition cycles, at least one of the cycles comprising: supplying a reactant to the reaction space, wherein supplying the reactant comprises in sequence: flowing the reactant outwardly and horizontally at a first vertical level toward the upstream periphery of the reaction space while widening a flow path of the reactant, and flowing the reactant vertically to the upstream periphery and into the reaction space, thereby generating a laminar flow substantially parallel to a surface of the substrate, wherein at the upstream periphery of the reaction space the laminar flow provides a non-uniform amount of reactant from a center portion relative to the edge portions of the laminar flow over a given period of time; reacting the reactant with the surface of the substrate; and removing excess first reactant from the reaction space.