Patent ID: 8497181
Filing Date: 2013-07-30
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device having a capacitor structure sandwiching a capacitor film constituted of a dielectric material by a lower electrode and an upper electrode above a semiconductor substrate, the method comprising, when forming the capacitor structure, the steps of: forming a lower electrode layer; forming a dielectric film in an amorphous state on the lower electrode layer; performing first thermal treatment on the dielectric film in an oxidizing atmosphere to crystallize the dielectric film; forming on the dielectric film an upper electrode layer containing iridium inside; performing second thermal treatment on the upper electrode layer in an oxidizing atmosphere to cause iridium in the upper electrode layer to diffuse into the dielectric film; and processing each of the upper electrode layer, the dielectric film, and the lower electrode layer to form the capacitor structure.