Abstract:
The present disclosure relates to semiconductor structures and, more particularly, to variable space mandrel cut for self-aligned double patterning and methods of manufacture. The method includes: forming a plurality of mandrels on a substrate; forming spacers about the plurality of mandrels and exposed portions of the substrate; removing a portion of at least one of the plurality of mandrels to form an opening; and filling in the opening with material.
Abstract:
Reducing liner corrosion during metallization of semiconductor devices at BEOL includes providing a starting metallization structure, the structure including a bottom layer of dielectric material with a via therein, a liner lining the via and extending over upper edges thereof, the lined via over filled with a conductive material, recessing the conductive material down to the liner, further selectively recessing the conductive material below the upper edges of the via without damaging the liner, and forming a cap of the liner material on the conductive material.
Abstract:
A device including oxide spacer in a contact over active gates (COAG) and method of production thereof. Embodiments include first gate structures over a fin of a substrate and second gate structures, each over an outer portion of the fin and a shallow trench isolation (STI) layer adjacent to the fin; a first raised source/drain (RSD) in a portion of the fin between the first gate structures and a second RSD in the portion of the fin between the first and second gate structures; a metal liner over the first and second RSD and on sidewall portions of the first and second gate structures; a metal layer over the metal liner; and an interlayer dielectric (ILD) over the metal liner and portions of the first and second gate structures.
Abstract:
The present disclosure relates to semiconductor structures and, more particularly, to a cobalt plated via integration scheme and methods of manufacture. The structure includes: a via structure composed of cobalt material; and a wiring structure above the via structure. The wiring structure is lined with a barrier liner and the cobalt material and filled with conductive material.
Abstract:
The present disclosure relates to semiconductor structures and, more particularly, to multiple threshold voltage devices and methods of manufacture. The structure includes: a gate dielectric material; a gate material on the gate dielectric material, the gate material comprising different thickness in different regions each of which are structured for devices having a different Vt; and a workfunction material on the gate material.
Abstract:
The present disclosure generally relates to semiconductor structures and, more particularly, to gate structures and methods of manufacture. The structure includes: a plurality of gate structures comprising a gate cap, sidewall spacers and source and drain regions; source and drain metallization features extending to the source and drain regions; and a liner extending along an upper portion of the sidewall spacers of at least one of the plurality of gate structures.
Abstract:
An improved method for fabricating a semiconductor device is provided to decrease substrate gouging during oxide spacer formation. The method includes: forming a gate structure on a substrate; depositing an oxide layer along the sidewalls of the gate structure and on the substrate; removing some of the oxide layer to define oxide spacers along sidewalls of the gate structure; and performing an isotropic etch process to remove a residual portion of the oxide layer.
Abstract:
The present disclosure generally relates to semiconductor structures and, more particularly, to middle of line gate structures and methods of manufacture. The structure includes: a plurality of adjacent gate structures; a bridged gate structure composed of a plurality of the adjacent gate structures; source and drain regions adjacent to the bridged gate structure and comprising source and drain metallization features; and contacts to the bridged gate structure and the source and drain metallization features.
Abstract:
The present disclosure relates to semiconductor structures and, more particularly, to methods to remove a contact etch stop layer without consuming material of a self-aligned contact (SAC) layer. The method includes: forming a gate structure on a substrate; forming a capping layer on the gate structure; forming a contact etch stop layer of a first material, adjacent to the gate metal structure; converting the contact etch stop layer to a second material which is different than the capping layer; and selectively removing the second material without completely removing the capping layer.
Abstract:
Devices and methods of fabricating integrated circuit devices with reduced cell height are provided. One method includes, for instance: obtaining an intermediate semiconductor device having a substrate including a logic area and an SRAM area, a fin material layer, and a hardmask layer; depositing a mandrel over the logic area; depositing a sacrificial spacer layer; etching the sacrificial spacer layer to define a sacrificial set of vertical spacers; etching the hardmask layer; leaving a set of vertical hardmask spacers; depositing a first spacer layer; etching the first spacer layer to define a first set of vertical spacers over the logic area; depositing an SOH layer; etching an opening in the SOH layer over the SRAM area; depositing a second spacer layer; and etching the second spacer layer to define a second set of spacers over the SRAM area.