Patent ID: 7851355
Filing Date: 2010-12-14
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device in which a metal film is embedded inside connection holes opening in an insulating film through a barrier metal film; before depositing the barrier metal film inside the connection holes after forming the connection holes in the insulating film, comprising: (a) placing a semiconductor wafer over a wafer stage provided in a first chamber; (b) performing dry cleaning treatment to insides of the connection holes by supplying reducing gas, which is excited by a plasma, through a showerhead set above the wafer stage; (c-1) after (b) performing the dry cleaning treatment, lifting the semiconductor wafer from the wafer stage in order to position a principal surface of the semiconductor wafer closer to the showerhead than when the semiconductor wafer is on the wafer stage; (c-2) performing a first heat treatment to the semiconductor wafer at a first temperature utilizing a heating temperature of the showerhead; (d) transferring the semiconductor wafer from the first chamber to a second chamber; and (e) performing a second heat treatment to the semiconductor wafer at a second temperature higher than the first temperature in the second chamber.