Patent ID: 7291530
Filing Date: 2007-11-06
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor storage device having a capacitive element having a dielectric layer having a perovskite-type crystal structure represented by general formula ABO 3 and a lower electrode and an upper electrode disposed so as to sandwich the dielectric layer therebetween, the method comprising: forming, on a conductive layer constituting the lower electrode, using a metal organic chemical vapor deposition method, an initial nucleus containing at least one metallic element the same as a metallic element in the dielectric layer; forming, on the initial nucleus, using a metal organic chemical vapor deposition method, a buffer layer containing at least one metallic element the same as the metallic element contained in both the initial nucleus and the dielectric layer, in a higher content than the content of this metallic element contained in the initial nucleus; and forming, on the buffer layer, using a metal organic chemical vapor deposition method, the dielectric layer having a perovskite-type crystal structure.