Patent ID: 6924231

Claim:
A single-substrate processing method for a semiconductor process, comprising: performing a plurality of process operations for subjecting a plurality of target substrates respectively to a semiconductor process in a process chamber, while temperature-controlling each target substrate through a temperature control medium that is temperature-controlled by a temperature control member, during the semiconductor process; measuring a parameter representing a reflection coefficient within the process chamber, between first and last ones of the plurality of process operations, the reflection coefficient being changed depending on deposition of a by-product, which is generated during the semiconductor process, within the process chamber; and adjusting set temperature of the temperature control medium used in the semiconductor process, based on a measured value of the parameter, during process operations performed after measuring the parameter, wherein if the measured value of the parameter shows a decrease in the reflection coefficient, the set temperature of the temperature control medium is adjusted higher, while if the measured value of the parameter shows an increase in the reflection coefficient, the set temperature of the temperature control medium is adjusted lower.