Patent ID: 6667216
Filing Date: 2003-12-23
Classification: H01L

Abstract:
A method of fabricating a semiconductor device, the method comprising the steps of:a) forming a gate electrode on a semiconductor substrate with a gate insulating film interposed therebetween; b) ion implanting a second-conductivity-type impurity into the semiconductor substrate by using the gate electrode as a mask to form first impurity layers of second-conductivity-type; c) after the step b), implanting indium ions into the semiconductor substrate by using the gate electrode as a mask to form second impurity layers of first-conductivity-type in lower portions of the first impurity layers; d) after the step c), performing a first heat treatment within a short-time and at high temperature with respect to the semiconductor substrate; e) after the step d), forming sidewalls on side surfaces of the gate electrode; f) ion implanting a second-conductivity-type impurity into the semiconductor substrate by using the gate electrode and the sidewalls as a mask to form third impurity layers of second-conductivity-type; and g) after the step f), performing a second heat treatment within a short-time and at high temperature with respect to the semiconductor substrate.