Patent ID: 8118945

Claim:
A substrate processing method, comprising: a cleaning processing step of cleaning a main surface of a substrate by supplying deionized water to the substrate; a mixed organic solvent supplying step of supplying a fluid of a mixed organic solvent to the main surface of the substrate after the cleaning processing step, the fluid of the mixed organic solvent containing a fluid of a water-soluble organic solvent and a fluid of a fluorine organic solvent having a smaller surface tension than that of the deionized water and a lower water solubility than that of the fluid of the water-soluble organic solvent; and a fluorine organic solvent supplying step of supplying the fluid of the fluorine organic solvent to the main surface of the substrate without supplying the fluid of the water-soluble organic solvent after the mixed organic solvent supplying step, wherein the fluorine organic solvent supplying step includes a step of placing an opposing member having an opposing surface disposed such that the opposing surface is opposed to the main surface of the substrate, and a step of supplying a steam of the fluorine organic solvent to the main surface of the substrate by supplying the steam of the fluorine organic solvent between the main surface of the substrate and the opposing surface of the opposing member, the method further comprising: a step of setting, in parallel with the fluorine organic solvent supplying step, a temperature of the opposing surface of the opposing member above a dew point of the fluid of the fluorine organic solvent and setting a temperature on the main surface of the substrate to or below the dew point of the fluid of the fluorine organic solvent.