Method of fabricating an integrated circuit configuration with at least one capacitor

A method of producing an integrated circuit configuration with at least one capacitor, which comprises:

• providing a substrate having a surface defining a y-axis extending substantially perpendicular to the surface and defining a first height, a second height above the first height, and a third height between the first height and the second height;
• producing a central part of a first capacitor electrode of the capacitor to extend from the first height to the second height, by forming a depression in an auxiliary layer applied on the substrate and filling the depression at least partly with conductive material;
• after producing the central part, etching the auxiliary layer no deeper than to the third height;
• producing a component of the integrated circuit configuration and connecting the component to the central part produced thereabove;
• producing a spacer reaching at most to the second height, by depositing and etching back material as part of a spacing means, on uncovered parts of lateral areas of the central part;
• growing conductive material, by selective epitaxy, on the central part but not on the spacing means;
• depositing further conductive material substantially conformally;
• etching back the conductive material to thereby produce from the conductive material
• at least one side part of the first capacitor electrode beside the central part and spaced apart from the central part, such that the side part extends from the third height to the second height;
• an upper part of the first capacitor electrode on the side part and the central part and connecting the side part and the central part to one another;
• and
• to partly uncover a portion of the spacing means that projects laterally below the side part;
• providing the first capacitor electrode with a capacitor dielectric;
• and
• producing a second capacitor electrode adjoining the capacitor dielectric.