Patent ID: 6268258
Filing Date: 2001-07-31
Classification: H01L

Abstract:
A method for fabricating a capacitor in a semiconductor device, the capacitor having a lower electrode, a dielectric film formed on a surface of the lower electrode, and an upper electrode formed on the dielectric film, the method comprising the steps of:(1) forming the dielectric film of at least one oxide selected from a group of oxides of Lead (Pb), Zirconium (Zr), Tantalum (Ta), Barium (Ba), Strontium (Sr), and Titanium (Ti);(2) forming the upper electrode and the lower electrode of the capacitor with a metal having a standard Gibbs free energy greater than a oxide metal of the dielectric film; and,(3) annealing to crystallize the dielectric film in an atmosphere of which partial pressure ratio of P.sub.H20 /P.sub.H2 is 10E-20.about.10E0.