Patent ID: 6323083
Filing Date: 2001-11-27
Classification: H01L

Abstract:
A method for forming a lower electrode structure of a capacitor of a semiconductor device, comprising the steps of:forming an active region in a semiconductor substrate;forming an insulation layer atop the semiconductor substrate having the active region formed therein;forming a contact hole in the insulation layer, the contact hole exposing the active region; forming a conductive plug connected to the active region through the contact hole, the conductive plug having an upper contact surface;forming a silicide contact on tile upper contact surface of the conductive plug;forming a lower electrode layer in electrical contact with the silicidc contact, by depositing titanium aluminum nitride on the insulation layer; andpatterning the lower electrode layer to form a lower electrode having an upper surface and wherein a nitriding process is performed on the lower electrode to form a nitride thin film on the upper surface of the lower electrode.