Patent ID: 7592267
Filing Date: 2009-09-22
Classification: B08B,C23C,H01L

Abstract:
1. A method for manufacturing a semiconductor silicon substrate comprising: a film forming step of forming an electrically conductive film, an insulating film and barrier film on a substrate in the presence of carbon dioxide in the supercritical state under conditions of a temperature of from 150 to 350° C. and a pressure of from 7.5 to 12 MPa; and at least one of: a cleaning step of cleaning the substrate in a presence of carbon dioxide in a supercritical state under conditions of a temperature of from 31 to 100° C. and a pressure of from 18 to 40 MPa; an etching step of etching the substrate in the presence of carbon dioxide in the supercritical state under conditions of a temperature of from 31 to 100° C. and a pressure of from 18 to 40 MPa; and a resist removing step of removing a resist on the substrate in the presence of carbon dioxide in the supercritical state under conditions of a temperature of from 31 to 80° C. and a pressure of from 18 to 40 MPa.