Patent ID: 6667200
Filing Date: 2003-12-23
Classification: H01L

Abstract:
A method for forming a transistor of a semiconductor device, the method comprising the steps of:(a) defining a first and a second regions on a semiconductor substrate using a device isolation film pattern; (b) ion-implanting a first conductive type impurity into the first region to form a first channel layer; (c) ion-implanting a second conductive type impurity into the second region, using an exposure mask to form a second channel layer; (d) performing a high temperature thermal process to convert the first and second channel layers into first and second stabilized channel layers, respectively; (e) performing a hydrogen treatment process on the structure resulting from step (d); (f) growing undoped silicon epitaxial layers on the first and the second stabilized channel layers thereby generating a first and a second &dgr;-doped epitaxial channels of a super-steep-retrograde structure; (g) forming a gate insulating film and a gate electrode on the first and the second &dgr;-doped epitaxial channels, respectively; (h) re-oxidizing the gate insulating film to repair damaged portions of the gate insulating film; and (i) forming a source/drain region and performing a low temperature thermal process.