Patent ID: 6977199

Claim:
A method of fabricating a semiconductor device, comprising the steps of: depositing a first insulation film of a prescribed thickness on a main surface of a semiconductor substrate; providing said first insulation film with an opening to expose a main surface of said semiconductor substrate; depositing an amorphous silicon film on a surface of said first insulation film including said opening's bottom and side surfaces; at least forming a silicon nucleus on a surface of said amorphous silicon film to grow silicon to form a layer to serve as an electrode; depositing a second insulation film on said layer to serve as said electrode to fill said opening; removing said layer to serve as said electrode and said second insulation film from an upper surface of said first insulation film to electrically isolate said layer to serve as said electrode; removing said first and second insulation films to expose said layer to serve as said electrode; growing a crystal of silicon of said layer to said electrode exposed, to form an electrode having protrusions and depressions; and forming another electrode on said electrode with a third insulation film posed therebetween.