Patent ID: 7763553

Claim:
A manufacturing method of a semiconductor device comprising: supplementally heating a semiconductor substrate from a rear surface of a main surface thereof to set a temperature of an outer peripheral portion of the semiconductor substrate higher than that of a central portion thereof; and applying one of a pulse-like flash lamp light and laser light of 0.1 ms to 100 ms to the main surface of the semiconductor substrate and performing a heat treatment by use of applied energy while the semiconductor substrate is being supplementally heated, wherein the heat treatment performed by use of the applied energy is performed in a low-pressure state, and wherein a pressure value P in the low-pressure state satisfies a relation of [0.01−0.005(C S /W S )≦P≦0.4−0.2(C S /W S ) (kgf/cm 2 )] when an area of a surface portion of the semiconductor substrate which is supplementally heated is set to W S and a contact area between the surface portion and a susceptor which makes contact with the surface portion is set to C S .