Patent ID: 11894268
Assignee: NANYA TECHNOLOGY CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for fabricating a semiconductor device, comprising:
providing a substrate;
forming a bottom conductive plug on the substrate;
forming an intervening conductive layer by the steps of:
forming a center portion of the intervening conductive layer on the bottom conductive plug, wherein a bottom surface of the center portion is in direct contact with a top surface of the bottom conductive plug, wherein the center portion of the intervening conductive layer is formed of polycrystalline silicon, polycrystalline germanium, or polycrystalline silicon-germanium; and
forming an outer portion of the intervening conductive layer to enclose the center portion thereof, wherein the outer portion has two ends in direct contact with the top surface of the bottom conductive plug and coplanar with the bottom surface of the center portion, wherein the outer portion of the intervening conductive layer is formed of metal silicide; and
forming a top conductive plug on the outer portion of the intervening conductive layer.