Patent ID: 7731801

Claim:
A semiconductor wafer treatment method comprising: an ozone water treatment process in which the semiconductor wafer is treated by using a first ultra-pure water that includes a predetermined total organic carbon content and includes ozone gas added thereto, the first ultra-pure water being treated by an ultraviolet ray sterilization method, and the first ultra-pure water including a total organic carbon content that is more than 1 μg/liter and less than 20 μg/liter; an ultra-pure water rinsing process in which the semiconductor wafer is treated by using a second ultra-pure water, the second ultra-pure water being treated by ultraviolet ray oxidization method, and the second ultra-pure water including a total organic carbon content that is 1 μg liter or less; and a chemical solution cleaning process in which the semiconductor wafer is cleaned by a chemical solution using the second ultra-pure water as diluting water, before executing the ultra-pure water rinsing process.