Patent ID: 6291028
Filing Date: 2001-09-18
Classification: C23C,H01J,H01L

Abstract:
A method for depositing a layer on a substrate disposed in a parallel plate, capacitively coupled plasma substrate processing chamber, said method comprising:(a) placing a substrate in a substrate processing chamber;(b) during a first deposition stage, flowing an inert gas and a first reactant gas into the chamber, forming a plasma within said chamber from said inert gas and said first reactant gas with RF energy and ramping said RF power to full power at a selected rate of increase, wherein constituents from said inert gas and said first reactant gas do not react to deposit material on the substrate; and(c) during a second deposition stage after said first deposition stage and after said RF power reaches substantially full power, flowing a second reactant gas into the chamber to initiate deposition of the layer over the substrate.