Patent ID: 6140177
Filing Date: 2000-10-31
Classification: H01L,Y10S

Abstract:
A method for manufacturing a capacitor in a semiconductor arrangement, comprising the steps of:forming a statistical mask with statistically distributed mask structure on a substrate;forming nuclei of silicon and germanium for formation of the statistical mask;interrupting the nucleus formation as soon as a predetermined density of the nuclei is reached;setting a size of the nuclei by selective epitaxy of at least one of silicon and germanium;forming column structures that are connected to one another at a column base via a connector element using the statistical mask;at least the surface of the column structures and of the connector element being electrically conductive;generating a dielectric layer with substantially conformal edge coverage, that at least covers the surface of the column structures for forming a capacitor dielectric;depositing a conductive layer with substantially conformal edge coverage for forming a capacitor plate.