Patent ID: 7023039

Claim:
A capacitor-containing assembly, comprising: a substrate supporting an electrical node; an insulative mass over the substrate and having an opening extending therethrough to the electrical node; the opening having a sidewall periphery and a bottom periphery; the insulative mass having an upper surface proximate the opening; a conductive material extending along the sidewall periphery of the opening through the insulative mass, but not extending along a majority of the bottom periphery of the opening; the conductive material not extending above the upper surface of the insulative mass; a first silicon-containing layer against the conductive material and within the opening; the first silicon-containing layer defining a container shape extending along the sidewall periphery of the opening and along the bottom periphery of the opening; the first silicon-containing layer extending to above the upper surface of the insulative mass; an outer surface of the container shape of the first silicon-containing layer having a first roughness; a second silicon-containing layer within the container-shape defined by the first silicon-containing layer; the second silicon-containing layer extending along the sidewall periphery of the opening and along the bottom periphery of the opening; the second silicon-containing layer extending to above the upper surface of the insulative mass; at least some of the second silicon-containing layer being in the form of a rugged silicon having a surface roughness greater than the first roughness; a dielectric material against the second silicon-containing layer and against a portion the first silicon-containing layer; and a conductive material over the dielectric material; the container first and second silicon-containing layers, dielectric material and conductive material together defining at least part of the capacitor structure.