Patent ID: 8334193

Claim:
A method of manufacturing a semiconductor device, comprising: fixing a mask to a semiconductor substrate, wherein the mask is a either a mask comprising a first portion having a small thickness and a second portion thicker than the first portion or a mask comprising a first portion configured by a penetrating hole and a second portion having a predetermined thickness, irradiating n-type or p-type impurity ions from an impurity ion irradiation apparatus to a semiconductor substrate via the mask fixed to the semiconductor substrate, the impurity ions passing through the first portion are injected into the semiconductor substrate, irradiating charged particles from a charged particle irradiation apparatus to the semiconductor substrate via the mask fixed to the semiconductor substrate, wherein the charged particles passing through at least one of the first portion and the second portion are injected into the semiconductor substrate, and a short carrier lifetime region in which a carrier lifetime is shortened is formed in the semiconductor substrate within a range in which the charged particles are injected, and removing the mask from the semiconductor substrate, wherein a positional relationship between the mask and the semiconductor substrate is not changed from a beginning of one of the irradiating the impurity ions and the irradiating the charged particles to a completion of both of the irradiating the impurity ions and the irradiating the charged particles.