Patent ID: 9595433
Date: 2017-03-14
CPC Classifications: H01L

Claim:
1. A substrate processing method comprising: a hydrofluoric acid supplying step of supplying a hydrofluoric acid to a surface of a silicon substrate to apply a hydrophobizing process using the hydrofluoric acid to the silicon substrate surface; a rinsing step, executed after the hydrofluoric acid supplying step, of supplying water at room temperature to the silicon substrate surface to apply a rinsing process using the water to the silicon substrate surface; a second temperature water supplying step of supplying water at a second temperature lower than room temperature and in a range of 5° C. to 10° C., wherein the water at the second temperature is supplied to the silicon substrate surface in the second temperature water supplying step; a substrate rotating step of rotating the silicon substrate that is executed in parallel to the rinsing step and the second temperature water supplying step; and a drying step of rotating the silicon substrate after the second temperature water supplying step to spin off water on the silicon substrate surface to a periphery of the silicon substrate and thereby to dry the silicon substrate.