Patent ID: 7981816

Claim:
An impurity-activating thermal process method of performing an impurity-activating thermal process after a target is subjected to an impurity introduction step, the impurity-activating thermal process comprising the steps of: (a) performing a preheat treatment from a room temperature to a first predetermined temperature with respect to the target; and (b), after the step (a), performing spike RTA process and millisecond annealing process simultaneously with respect to the target, wherein in the step (b), while the spike RTA process including a holding period for holding a temperature at a second predetermined temperature is performed, a plurality of iterations of the millisecond annealing process at a third predetermined temperature higher than the second predetermined temperature are performed during the holding period of the spike RTA process, the first predetermined temperature is 350° C. to 650° C., both inclusive, the second predetermined temperature is 1000° C. to 1150° C., both inclusive, and the third predetermined temperature is 1150° C. to 1400° C., both inclusive.