Patent ID: 6713363
Filing Date: 2004-03-30
Classification: H01L

Abstract:
A Method for fabricating a capacitor of a semiconductor device comprising:depositing a nitride film and an oxide film over a substrate, the oxide film being deposited on the nitride film by chemical vapor deposition; sequentially etching the oxide film and the nitride film using a patterned photoresist as a mask; depositing a conductive layer over the substrate; forming a photoresist pattern on the conductive layer; etching the conductive layer using the photoresist pattern as a mask to form a lower electrode; removing the photoresist using an etching gas that is non-reactive with respective to the lower electrode, wherein the etching gas is one of a mixture H2O, NH3, and N2, a mixture of N2 and NH3, a mixture of NH3 and H2O, and a mixture of N2 and H2O; and forming a dielectric film and an upper electrode on a surface of the lower electrode.