Patent ID: 7989299

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: forming a gate insulating film on a semiconductor substrate; forming a gate electrode on the gate insulating film; forming a sidewall on a side surface of the gate electrode; forming a hole in the semiconductor substrate beside the gate electrode using any one of an organic alkaline solution and a tetramethylammonium hydroxide (TMAH) solution as an etchant, after forming the sidewall; and forming a source/drain material layer in the hole; wherein in the step of forming the hole, a thickness of the gate electrode is reduced by the etchant, and the method further comprises, after the step of forming the hole, the steps of: forming a refractory metal layer on the source/drain material layer and the gate electrode; and causing a reaction between the refractory metal layer and the gate electrode by heating the refractory metal layer and siliciding the entire gate electrode.