| abstract |
A method for forming an aluminum contact through an insulating layer (12) includes the formation of an opening (14). A barrier layer (16,18) is formed, if necessary, over the insulating layer and in the opening. A thin refractory metal layer is then formed over the barrier layer (16,18), and aluminum (26) deposited over the refractory metal layer. Proper selection of the refractory metal layer and aluminum deposition conditions allows the aluminum to flow into the contact and completely fill it. Preferably, the aluminum (26) is deposited over the refractory metal layer without breaking vacuum. |