Patent ID: 6391715
Filing Date: 2002-05-21
Classification: H01L

Abstract:
A method for fabricating a capacitor of a semiconductor device, comprising:forming an insulating interlayer over a semiconductor substrate; forming a buried contact hole in the insulating interlayer to expose a portion of the semiconductor substrate; forming a lower electrode over the insulating interlayer and in the buried contact hole; performing a first cleaning process on the insulating interlayer and lower electrode; growing a hemispherical grain (HSG) on an exposed portion of the lower electrode; performing a second cleaning process on the lower electrode and the HSG; doping an impurity into the HSG; and forming a dielectric layer over HSG and the lower electrode, wherein the doping of an impurity into the HSG and the forming of a dielectric layer are performed in a single process chamber without breaking up of a vacuum state of the chamber.