Patent ID: 6156619
Filing Date: 2000-12-05
Classification: H01L

Abstract:
A method of fabricating a semiconductor device having a capacitor comprising:depositing a a first conductive material that is not nitrided on an insulating film, to form an adhesive layer;depositing a second conductive material that is a nitride of said first conductive material on a surface of said first conductive material, to form a barrier layer;depositing a third conductive material that is more difficult to be nitrided than said first conductive material on a surface of said second conductive material, to form an electrode layer;patterning said adhesive layer, said barrier layer and said electrode layer;forming a nitride side on a side face of said adhesive layer by heating said adhesive, barrier and electrode layers in an atmosphere of nitrogen gas,said adhesive, barrier and electrode layers and said nitride side forming a lower electrode;depositing an insulating material so as to cover an upper surface and a side surface of said lower electrode, to form a capacitor insulating film; anddepositing a fourth conductive material so as to cover a surface of said capacitor insulating film, to form an upper electrode.