Patent ID: 7582525

Claim:
A method of fabricating a semiconductor device, comprising: forming an inter-layer insulation layer on a substrate; forming a plurality of storage node contact plugs penetrating into the inter-layer insulation layer; forming a stack structure formed by stacking a first protective barrier layer and a sacrificial layer on the inter-layer insulation layer, wherein the first protective barrier layer is formed by using amorphous carbon; performing an etching process to the first protective barrier layer and the sacrificial layer in a manner to have trenches opening upper portions of the storage node contact plugs; forming a plurality of storage nodes having a cylinder type inside of the trenches; forming a second protective barrier layer filling the inside of the storage nodes having the cylinder type; removing the sacrificial layer through performing a wet dip-out process; removing the first protective barrier layer and the second protective barrier layer; and sequentially forming a dielectric layer and a plate node on the storage nodes.