Abstract: There is provided a method and apparatus for etching a ruthenium film which can sufficiently etch away a ruthenium film formed on or adhering to the peripheral region, especially a no-device-formed region, backside or other portions of a substrate. The method comprises etching a ruthenium film formed on a substrate with a chemical liquid having a pH of not less than 12 and an oxidation-reduction potential of not less than 300 mVvsSHE.

Abstract: An apparatus continuously supplies an acid solution to a central portion of a surface of a substrate while the substrate is rotating, and also supplies an oxidizing agent solution continuously or intermittently to a periphery of the substrate. In addition, the apparatus supplies an oxidizing agent solution and an acid solution either simultaneously or alternately to a reverse side of the substrate.

Abstract: An apparatus continuously supplies an acid solution to a central portion of a surface of a substrate while the substrate is rotating, and also supplies an oxidizing agent solution continuously or intermittently to a periphery of the substrate. In addition, the apparatus supplies an oxidizing agent solution and an acid solution either simultaneously or alternately to a reverse side of the substrate.

Abstract: There is provided a substrate processing apparatus and method which can uniformly increase the rate of processing of a substrate, e.g. etching or plating that takes place in the surface of a substrate, and which, when carrying out plating processing of a substrate, can form a plated film having a uniform film thickness easily and quickly. The substrate processing apparatus includes: a substrate holder 10 for holding and rotating a substrate W; and a heated fluid supply section 24 for bringing a heated fluid at a controlled temperature into contact with the substrate W, which is held and rotated by the substrate holder 10, so as to control the temperature of the substrate W.

Abstract: An acid solution is continuously supplied to a central portion of a surface of a substrate while the substrate is rotating, and an oxidizing agent solution is continuously or intermittently supplied to a periphery of the substrate. In addition, an oxidizing agent solution and an acid solution are simultaneously or alternately supplied to a reverse side of the substrate.

Abstract: There is provided a method and apparatus for etching a ruthenium film which can sufficiently etch away a ruthenium film formed on or adhering to the peripheral region, especially the no device formed region, backside or other portions of a substrate. The method comprises etching a ruthenium film formed on a substrate with a chemical liquid having a pH of not less than 12 or and an oxidation-reduction potential of not less than 300 mVvsSHE.