Patent ID: 6506677
Filing Date: 2003-01-14
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, the method comprising the sequential steps:(a) introducing a wafer containing inlaid copper (Cu) or a Cu alloy into a chamber; (b) treating an exposed surface of the Cu or Cu alloy with a plasma containing ammonia (NH3) and nitrogen (N2) in the chamber at a pressure; (c) introducing silane (SiH4) into the chamber; and (d) depositing a silicon nitride capping layer on the surface of the Cu or Cu alloy in the chamber, wherein steps (c) and (d) are conducted under the pressure used in step (b), and step (c) is conducted by ramping up the introduction of SiH4 into the chamber to a deposition flow rate in a plurality of flow rate stages.